Researcher Database

Hiroyuki Takashima
Faculty of Health Sciences Health Sciences Biomedical Science and Engineering
Associate Professor

Researcher Profile and Settings

Affiliation

  • Faculty of Health Sciences Health Sciences Biomedical Science and Engineering

Job Title

  • Associate Professor

URL

Research funding number

  • 90608738

J-Global ID

Research Interests

  • 骨格筋   MRI   テンソル   拡散   

Research Areas

  • Life sciences / Radiology

Educational Organization

Academic & Professional Experience

  • 2022/03 - Today Hokkaido University
  • 2021/09 - 2022/09 Stanford University
  • 2013/04 - 2022/02 Sapporo Medical University School of Medicine

Research Activities

Published Papers

  • Yoshihiro Akatsuka, Atsushi Teramoto, Yasutaka Murahashi, Katsunori Takahashi, Rui Imamura, Hiroyuki Takashima, Kota Watanabe, Toshihiko Yamashita
    Skeletal radiology 2023/10/20 
    OBJECTIVE: To determine T2* normal reference values for anterior talofibular ligament (ATFL) and to investigate the feasibility of the quantitative ATFL quality evaluation in chronic lateral ankle instability (CLAI) using T2* values. MATERIALS AND METHODS: This study enrolled 15 patients with CLAI and 30 healthy volunteers. The entire ATFL T2* values from the MRI T2* mapping were measured. The prediction equation (variables: age, height, and weight) in a multiple linear regression model was used to calculate the T2* normal reference value in the healthy group. T2* ratio was defined as the ratio of the actual T2* value of the patient's ATFL to the normal reference value for each patient. A Telos device was used to measure the talar tilt angle (TTA) from the stress radiograph. RESULTS: T2* values of ATFL in the healthy and CLAI groups were 10.82 ± 1.84 ms and 14.36 ± 4.30 ms, respectively, which are significantly higher in the CLAI group (P < 0.05). The prediction equation of the normal reference T2* value was [14.9 + 0.14 × age (years) - 4.7 × height (m) - 0.03 × weight (kg)] (R2 = 0.65, P < 0.0001). A significant positive correlation was found between the T2* ratio and TTA (r = 0.66, P = 0.007). CONCLUSION: MRI T2* values in patients with CLAI were higher than those in healthy participants, and the T2* ratio correlated with TTA, suggesting that T2* values are promising for quantitative assessment of ATFL quality preoperatively.
  • Izaya Ogon, Tsuneo Takebayashi, Hironori Chiba, Hiroyuki Takashima, Tomonori Morita, Atsushi Teramoto
    Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association 2023/06/02 
    BACKGROUND: Lumbar radicular pain is a common symptom of lumbar disc herniation and spinal canal stenosis, and L4 nerve root impingement is difficult to diagnose. This study aimed to elucidate the extension rate of L4 nerve roots in Thiel-embalmed specimens using both classic and new femoral nerve stretch test (FNST), as well as straight leg raising test (SLRT). Additionally, the extension rate of the L2 and L3 nerve roots and L5 and S1 roots were determined using FNST (both classic and new) and SLRT, respectively. METHODS: Four Thiel-embalmed specimens were used. The extension rate data of the nerve root were obtained using a displacement sensor under the following conditions: knee joint flexed to 0°/45°/90°/135° with either the hip extension/flexion of 0° (classic FNST) or extension of 15° (new FNST); and hip joint flexed to 0°/30°/60°/90° with the knee flexion of 0° (SLRT). RESULTS: Case A had almost no L4 nerve root lengthening at 45° and 90° knee joint flexion; however, at 135° of knee flexion, the nerve root was lengthened. In Case B, the L4 nerve root was hardly extended by the classic FNST, but it was extended at 135° of knee flexion and 15° of hip extension. In Case C, the L4 nerve root showed little change by classic FNST and it was shortened by new FNST, whereas, it was extended by SLRT. Case D showed a shortened L4 nerve root at 135° of knee flexion in classic FNST and at 0°/45°/90°/135° of knee flexion and 15° of hip extension. Further, no root shortening was observed for L2 and L3 nerve roots according to both classic and new FNST. In contrast, the extension of L2 and L3 nerve root with the new FNST was high. In all cases, nerve roots were lengthened by the SLRT. Further, as the hip flexion angle increased, the rate of nerve elongation also increased. CONCLUSIONS: It was shown that in patients in whom L4 nerve root was extended by FNST, it was shortened by SLRT. The opposite pattern was also observed. Further, it is believed that FNST and SLRT are reliable tests for L2 and L3 radiculopathy and L5 and S1 radiculopathy, respectively, and that more tension on the femoral and sciatic nerves is better. Furthermore, we recommend that FNST should be performed with 15° hip extension and 135° knee flexion to improve the diagnostic accuracy.
  • Izaya Ogon, Tsuneo Takebayashi, Hiroyuki Takashima, Yasuhisa Abe, Hiroshi Oguma, Rui Imamura, Yoshihiro Akatsuka, Tomonori Morita, Atsushi Teramoto
    Global spine journal 21925682231167788 - 21925682231167788 2192-5682 2023/03/31 
    STUDY DESIGN: Longitudinal study. OBJECTIVES: Intravoxel incoherent motion (IVIM), a magnetic resonance imaging (MRI) scanning technique that applies diffusion-weighted imaging (DWI), is effective for the quantitative assessment of malignant tumors of the vertebral bone. We hypothesized that IVIM parameters of vertebral bodies are associated with the prognosis of osteoporotic vertebral fracture (OVF). We aimed to explore the relationships between IVIM parameters for vertebral collapse and non-union after OVF and calculate the cut-off values of these parameters for vertebral collapse and non-union. METHODS: A total of 150 patients with acute OVF (150 women; mean age: 79.1 ± 7.4 years) were included and treated conservatively with bracing. MRI was performed at the time of injury. IVIM parameters, such as apparent diffusion coefficient (ADC), molecular diffusion coefficient (D), and perfusion-related diffusion (D*) were recorded. The patients were classified into 3 groups: low-collapse (height loss of ≤50%), high-collapse (height loss of >50%), and non-union. We compared ADC, D, and D* among the low-collapse, high-collapse, and non-union groups and performed a receiver operating characteristic (ROC) curve analysis to determine the boundary values of the high-collapse and non-union groups. RESULTS: The low-collapse, high-collapse, and non-union groups had no significant differences in ADC and D. However, D* differed significantly among the 3 groups. ROC analysis revealed cut-off values of 19.0 × 10-3 mm2/s and 12.3 × 10-3 mm2/s for the high-collapse and non-union groups, respectively. CONCLUSIONS: D* is a significant prognostic indicator for high-collapse and non-union groups with OVF. This suggests that D* should be considered when assessing OVF.
  • Hiroyuki Takashima, Mitsunori Yoshimoto, Izaya Ogon, Tsuneo Takebayashi, Rui Imamura, Yoshihiro Akatsuka, Toshihiko Yamashita
    Acta radiologica (Stockholm, Sweden : 1987) 64 (3) 1116 - 1121 0284-1851 2023/03 
    BACKGROUND: Previous studies have explored the biochemical changes of disc degeneration and its relevance in low back pain using various quantitative magnetic resonance imaging (MRI) techniques. However, quantitative evaluation of intervertebral disc (IVD) with MRI such as T1rho, T2, and T2* have not been previously analyzed and compared directly in the same patients. PURPOSE: To investigate T1rho, T2, and T2* of IVD degeneration in the same patients, reveal the correlation coefficients of these values, and evaluate which values are more sensitive to detect the degree of IVD degeneration. MATERIAL AND METHODS: The participants were 55 patients who underwent MRI examinations which the investigator classified the degree of IVD degeneration according to the Pfirrmann classification. The T1rho, T2, and T2* values of IVD were analyzed for their classification and were compared. RESULTS: T1rho, T2, and T2* values were 74.3 ± 7.1, 61.2 ± 6.7, and 46.5 ± 16.3 ms (grade II); 61.6 ± 11.8, 48.9 ± 8.2, and 34.1 ± 11.8 ms (grade III); 50.8 ± 10.8, 38.9 ± 9.8, and 25.4 ± 8.1 ms, (grade IV); 44.5 ± 13.3, 34.8 ± 9.5, and 11.2 ± 6.6 ms (grade V), respectively. Those values significantly decreased with increasing grades, but T1rho and T2 values for grades IV and V were not different. CONCLUSION: The T1rho and T2 values were excellent for the evaluation of initial to moderate IVD degeneration with water and proteoglycan content. In contrast, the T2* value was suitable for detailed evaluation of progressive IVD, even with poor water content.
  • Kenta Yamatsu, Mizuho Hayashi, Hiroyuki Takashima, Kota Watanabe
    Foot (Edinburgh, Scotland) 54 101968 - 101968 2023/03 
    Bone morphology is one of the factors involved in hallux valgus development. However, previous studies have not evaluated the overall bone shape in three dimensions. This study aimed to compare the overall shape of the first proximal phalanx and first metatarsal in hallux valgus with those of normal feet.Homologous models were created from computed tomography data of the first proximal phalanx and first metatarsal of 75 healthy men and 53 women in the control group and 10 men and 71 women in the hallux valgus group. Principal component analysis was performed to examine the differences in bone morphology between the control and hallux valgus groups. In men and women with hallux valgus, the proximal articular surface of the first proximal phalanx was characterized by a more lateral inclination and torsion of the pronated first metatarsal. Additionally, the first metatarsal head was characterized by a more lateral inclination in male hallux valgus. This study is the first to reveal the morphological characteristics of the first metatarsal and first proximal phalanx in hallux valgus as a whole bone using a homologous model technique. These characteristics are considered possible causes of hallux valgus development. The shapes of the first proximal phalanx and first metatarsal in hallux valgus were different from those in normal feet. This finding should be useful when considering the pathogenesis and treatment development for hallux valgus.
  • Gentaro Ikeda, Hiroyuki Takashima, Chunli Zhao, Nathan Bayardo, Jennifer Lyins, Connor O'Brien, Phillip C. Yang
    CIRCULATION 146 0009-7322 2022/11 
    0
  • Hiroyuki Takashima, Gentaro Ikeda, Chunli Zhao, Nathan Bayardo, Connor O'Brien, Phillip C. Yang
    CIRCULATION 146 0009-7322 2022/11 
    0
  • 感染拡大防止を目的とした感染症患者検査時の感染箇所の同定と清拭消毒方法の検討
    高島 弘幸
    医療の広場 (公財)政策医療振興財団 62 (8) 9 - 11 2022/08 
    新型コロナウイルス感染症患者の肺炎の重症度などを判断する目的で幅広く利用されているCT検査室における、感染患者対応時の接触感染の原因となる箇所を明らかにすることを目的に、蛍光塗料を塗布したディスポーザブル長袖エプロン及び手袋等を装着した感染模擬患者を、実際の検査時と同様に標準予防策を施した医療者がCT寝台に移乗する介助を行い、実際の診療を想定した行為(酸素投与、造影剤投与、寝台操作および撮影等)後の、CT検査室内及び操作室をブラックライトで照射し、蛍光塗料付着部を汚染箇所としてカメラで撮影し、その箇所及び面積を計測した。その結果、汚染箇所は、とくにCT検査室内で大きく、CT装置の寝台の蛍光塗料付着が最も大きく、以下、造影剤投与インジェクター、ドアノブの順であった。
  • Izaya Ogon, Atsushi Teramoto, Hiroyuki Takashima, Yoshinori Terashima, Mitsunori Yoshimoto, Makoto Emori, Kousuke Iba, Tsuneo Takebayashi, Toshihiko Yamashita
    BMC musculoskeletal disorders 23 (1) 552 - 552 2022/06/08 
    BACKGROUND: Low back pain (LBP) is a major symptom of symptomatic lumbar spinal stenosis (SLSS). It is important to assess LBP in patients with SLSS to develop better treatment. This study aimed to analyse the factors associated with LBP in patients with SLSS. METHODS: This cross-sectional study included consecutive patients with SLSS aged between 51 and 79 years who had symptoms in one or both the legs, with and without LBP. The participants were classified into two groups: the high group (LBP visual analogue scale [VAS] score ≥ 30 mm) and the low group (LBP VAS score < 30 mm). We performed multiple logistic regression analysis with the high and low groups as dependent variables, and a receiver operating characteristic (ROC) analysis. RESULTS: A total of 80 patients with LSS were included (35 men and 45 women; mean age 64.5 years), with 47 and 30 patients in the high and low groups, respectively. Multivariate logistic regression analysis revealed that the sagittal vertical axis (SVA; + 10 mm; odds ratio, 1.331; 95% confidence interval, 1.051 - 1.660) and pelvic incidence-lumbar lordosis (PI-LL; + 1°; odds ratio, 1.065; 95% confidence interval, 1.019-1.168) were significantly associated with LBP. A receiver operating characteristic analysis revealed cut-off values of 47.0 mm of SVA and 30.5° of PI-LL, respectively. CONCLUSION: Our results indicated that SVA and PI-LL were significant predictors for LBP in SLSS. It is suggested that these parameters should be taken into consideration when assessing LBP in patients with SLSS.
  • 黄金 勲矢, 高島 弘幸, 寺島 嘉紀, 吉本 三徳, 竹林 庸雄, 山下 敏彦
    Journal of Spine Research (一社)日本脊椎脊髄病学会 13 (5) 770 - 777 1884-7137 2022/05 
    はじめに:目的は腰部脊柱管狭窄症における腰痛と関連する因子を解析することである.対象と方法:対象は腰部脊柱管狭窄症の患者120例(男性52例,女性68例,平均年齢64.1歳)で腰痛visual analogue scale(VAS)が30mmより大きいH群,30mm以下のL群に分類した.神経障害型式,VAS(下肢痛,下肢しびれ),骨密度,すべり,脊柱・骨盤アライメント,椎間板変性,多裂筋断面積と脂肪浸潤,Modic change,椎間関節変性を解析した.結果:H群とL群の平均はそれぞれ,下肢痛VASが73.3mmと50.3mm,下肢しびれVASが76.2mmと51.2mm,腰椎前彎角(lumbar lordosis:LL)が32.6°,40.4°,sagittal vertical axis(SVA)が54.4mm,29.2mm,仙骨傾斜が27.7°,32.3°,pelvic incidence(PI)-LLが15.9°,9.6°で有意差を認めた.多重ロジスティック回帰分析でSVA(調整オッズ比:1.017,95%信頼区間:1.003~1.031,p<0.05)とPI-LL(調整オッズ比:1.058,95%信頼区間:1.012~1.152,p<0.05)が有意となった.結語:腰部脊柱管狭窄症における腰痛にSVAとPI-LLが有意に関連していた.(著者抄録)
  • 圧縮センシング併用3D MRIにおけるCS reduction factorが空間分解能に与える影響
    植村 美穂, 中西 光広, 赤塚 吉紘, 今村 塁, 長濱 宏史, 沼澤 香夏子, 高島 弘幸
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (92) 32 - 33 0912-0327 2022/04
  • 呼吸同期の有無による圧縮センシング併用4D flow MRIの撮像時間および大動脈血流定量値の比較
    沼澤 香夏子, 中西 光広, 赤塚 吉紘, 今村 塁, 植村 美穂, 鈴木 瑞穂, 高島 弘幸
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (92) 43 - 44 0912-0327 2022/04
  • 胸骨骨折否定目的で行ったMRIで肋軟骨損傷と診断された1例
    赤塚 吉紘, 中西 光広, 植村 美穂, 今村 塁, 早川 耕平, 高島 弘幸
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (92) 50 - 51 0912-0327 2022/04
  • 廣田 亮介, 吉本 三徳, 高島 弘幸, 安田 尚美, 川原田 修義, 山下 敏彦
    東日本整形災害外科学会雑誌 東日本整形災害外科学会 34 (1) 6 - 12 1342-7784 2022/03 
    びまん性特発性骨増殖症(DISH)と血管石灰化・心血管イベント発生の相互関連性について調査した.心血管イベント発生症例はDISH罹患率が高く,DISHを有する症例は冠動脈・大動脈の石灰化が強いという結果からDISHと心血管イベントには何らかの相関があることが示唆された.本疾患の病態生理・発生メカニズムを捉える際に肝要な結果である.また,本知見は未治療の心血管疾患の早期発見・対応に有用となりうる.(著者抄録)
  • Kota Kurihara, Kousuke Iba, Atsushi Teramoto, Makoto Emori, Ryosuke Hirota, Tsutomu Oshigiri, Izaya Ogon, Noriyuki Iesato, Yoshinori Terashima, Hiroyuki Takashima, Mitsunori Yoshimoto, Tsuneo Takebayashi, Toshihiko Yamashita
    Clinical spine surgery 35 (1) E242-E247 - E247 2380-0186 2022/02/01 
    STUDY DESIGN: Retrospective analysis of prospectively collected observational data. OBJECTIVE: This study aimed to evaluate the slippage, sagittal alignment, and range of motion (ROM) after selective laminectomy (SL) in patients who had cervical spondylotic myelopathy (CSM) with degenerative spondylolisthesis (DS). SUMMARY OF BACKGROUND DATA: Clinical outcomes have been reported for both decompression and fusion surgeries for DS of the lumbar spine. However, only a few reports have examined cervical spine spondylolisthesis. MATERIALS AND METHODS: This study included 178 patients who underwent SL for CSM. Those with ossification of the posterior longitudinal ligament were excluded. Slippage >2 mm was defined as spondylolisthesis, and spondylolisthesis progression was defined as an additional displacement >2 mm on a neutral radiograph. The slippage, translational motion, C2-C7 angle, local kyphosis, and ROM were examined before and ≥2 years after surgery. Radiologic parameters were evaluated according to the slip direction and the number of laminae removed. RESULTS: DS was observed in 29 patients (16.3%); 24 patients, comprising 9 and 15 in the anterolisthesis and retrolisthesis groups, respectively, were successfully followed up for more than 2 years. Preoperative and postoperative radiologic changes in slippage, translational motion, C2-C7 angle, local kyphosis, and ROM were not remarkable in either group regardless of the number of laminae removed. Revision surgery for the progression of DS and alignment deterioration was not required in any patient of either group. CONCLUSIONS: SL does not affect DS, sagittal alignment, or ROM irrespective of the slip direction and the number of laminae removed, even after >2 years after surgery. Given the preservation of the posterior elements, SL may be an effective treatment for CSM with DS. LEVEL OF EVIDENCE: Level IV.
  • Makoto Emori, Hiroyuki Takashima, Kousuke Iba, Tomoko Sonoda, Takashi Oda, Tadashi Hasegawa, Toshihiko Yamashita
    Acta radiologica (Stockholm, Sweden : 1987) 62 (12) 1632 - 1638 0284-1851 2021/12 
    BACKGROUND: The differential diagnosis of fibroma of tendon sheath (FTS) and giant cell tumor of tendon sheath (GCTTS) on the basis of clinical and radiographic characteristics remains difficult. PURPOSE: To evaluate the quantitative measurement of signal intensity (SI) obtained by magnetic resonance imaging (MRI) for the differential diagnosis of FTS and GCTTS in just the finger. MATERIAL AND METHODS: We retrospectively identified patients with FTS (n = 6) and GCTTS (n = 22) of the finger who were treated at our hospitals between April 2011 and August 2019. Two researchers independently reviewed the MRIs and measured the regions of interest (ROIs) in the tumor and flexor tendon from the same image. The SI ratio obtained for the tumor and tendon ROIs was measured and compared using receiver-operating characteristic curve analyses. Sensitivity and specificity analyses were performed. RESULTS: The SI ratios (mean ± SD) of FTS and GCTTS were 1.83 ± 0.64 and 6.34 ± 3.16 for researcher 1 and 1.82 ± 0.60 and 6.10 ± 3.22 for researcher 2, respectively. The areas under the curve were 0.970 and 0.970 for researchers 1 and 2, respectively. The cut-off values of the SI ratio as determined by researchers 1 and 2 for differentiating FTS from GCTTS were 3.00 and 3.00, respectively (sensitivity = 95.5%, specificity = 100%). CONCLUSIONS: The SI ratio is useful for differentiating FTS from GCTTS independent of a combination of tumor signal and shape.
  • 赤塚 吉紘, 寺本 篤史, 高島 弘幸, 中西 光広, 渡邉 耕太, 山下 敏彦
    整形・災害外科 金原出版(株) 64 (13) 1705 - 1709 0387-4095 2021/12 
    <文献概要>足関節外側靱帯損傷における三次元(3D)MRI評価は有用であるが,最適な撮像条件に関しては一定の見解が得られていない。本研究では,健常ボランティア22名22足(男性15名,女性7名)を対象に,spin echo法である3D VISTAと,gradient echo法である3D balanced FFEの撮像を行い,前距腓靱帯(ATFL)と踵腓靱帯(CFL)の画像コントラストを比較した。取得した画像のATFL,CFL,およびそれらの周囲組織である腓骨,皮下脂肪に関心領域を設定し,コントラストノイズ比を測定した。ATFLと周囲組織とのコントラストノイズ比は,3D balanced FFEより3D VISTAの方が高い値を示した。また,CFLに関しても同様の傾向を示した。足関節外側靱帯を対象に3D MRIを撮像する場合には3D VISTAを選択することが望ましい。
  • 高島 弘幸, 山下 敏彦
    整形・災害外科 金原出版 64 (9) 1141 - 1145 0387-4095 2021/08/01 
    <文献概要>MRIは,CTに比べ軟部組織のコントラストに優れるという利点がある一方,骨を直接的に評価するには限界があった。MRIの新たな撮像法であるFRACTUREの開発によって,皮質骨や海綿骨を画像化することが可能となり,様々な部位に応用されつつある。今後,MRIの利点である良好な軟部組織のコントラストに骨の評価を組み合わせることで,さらなる有用性が期待される。
  • Izaya Ogon, Kouske Iba, Hiroyuki Takashima, Mitsunori Yoshimoto, Tomonori Morita, Tsutomu Oshigiri, Yoshinori Terashima, Makoto Emori, Atsushi Teramoto, Tsuneo Takebayashi, Toshihiko Yamashita
    Asian spine journal 15 (4) 441 - 446 1976-1902 2021/08 
    STUDY DESIGN: Cross-sectional study. PURPOSE: This study aimed to analyze the differences in the lipid contents in chronic low back pain (CLBP) patients with nociceptive pain (NocP) and neuropathic pain (NeP) using magnetic resonance spectroscopy (MRS) of the multifidus muscle (Mm). OVERVIEW OF LITERATURE: Early identification of the pain characteristics with CLBP is important because specific treatment approaches are required, depending on NocP and NeP. METHODS: The participants were 50 patients with CLBP (23 men and 27 women; mean age, 63.1±17.8 years; range, 41-79 years). We compared the Visual Analog Scale (VAS) scores, intramyocellular lipids (IMCLs) and extramyocellular lipids (EMCLs) of the Mm in NocP and NeP groups, as evaluated with the Japanese NeP screening questionnaire. RESULTS: The patients were categorized into the NocP (n=32) and NeP (n=18) groups. The mean VAS score of the NocP group was 59.3±3.1 mm and that of the NeP group was 73.6±4.6 mm. The mean VAS score was significantly higher in the NeP group as compared to that in the NocP group (p<0.01). As per the analysis of covariance for the VAS score, the mean IMCL levels of the Mm in the NocP and NeP groups were 722.3 mmol/L (95% confidence interval [CI], 611.4-833.1) and 484.8 mmol/L (95% CI, 381.1-588.5), respectively. The mean IMCL level was significantly higher in the NocP group than in the NeP group (p<0.05). The mean EMCL levels of the Mm for the NocP and NeP groups were 6,022.9 mmol/L (95% CI, 4,510.6-7,535.2) and 5,558.1 mmol/L (95% CI, 4,298.3-6,817.9), respectively; however, the difference was not significant (p=0.72). CONCLUSIONS: The results indicated an association between the IMCL level of the Mm and NocP. Our results suggest that MRS of the Mm might be beneficial for the assessment of CLBP as well as appropriate targeted analgesic therapies.
  • Satoshi Katano, Toshiyuki Yano, Masaki Shimizu, Katsuhiko Ohori, Hidemichi Kouzu, Masayuki Koyama, Ryohei Nagaoka, Takuya Inoue, Yuhei Takamura, Tomoyuki Ishigo, Hiroyuki Takashima, Masaki Katayose, Hirofumi Ohnishi, Tetsuji Miura
    ESC heart failure 8 (4) 2617 - 2624 2055-5822 2021/08 
    AIMS: Results of experimental studies have indicated the possibility of muscle and bone mass being negatively regulated by renin-angiotensin system (RAS) activation, but that possibility has not been analysed in patients with heart failure (HF). METHODS AND RESULTS: Data for HF patients who received a dual-energy X-ray absorptiometry scan in our hospital were reviewed. Propensity scores for the use of RAS inhibitors (RASIs) were calculated using a multivariate logistic regression model to minimize selection bias. One hundred sixty pairs of patients were extracted. Plasma aldosterone concentration was significantly lower in the RASIs group than in the no-RASIs group (119 [IQR 71-185] vs. 94 [IQR 60-131] pg/mL, P = 0.003), confirming RAS inhibition in the RASIs group. Skeletal muscle mass index tended to be higher in the RASIs group than in the non-RASIs group (15.6 [IQR 14.0-17.2] vs. 15.0 [IQR 13.3-16.6] pg/mL, P = 0.065). The proportion of patients with muscle wasting, defined as appendicular skeletal muscle mass indexes of <7.00 and <5.40 kg/m2 for males and females, respectively, was significantly lower in the RASIs group than in the non-RASIs group (53% vs. 64%, P = 0.041). Multivariate logistic regression analysis showed that the no use of RASIs was associated with presence of muscle wasting independently of age, presence of diabetes, renal function, and severity of HF. Bone mineral densities and proportions of patients with osteoporosis were similar in the two groups. CONCLUSIONS: Renin-angiotensin system inhibition is associated with a lower prevalence of muscle wasting in HF patients independently of established risk factors.
  • 今村 塁, 寺本 篤史, 神谷 智昭, 岡田 葉平, 村橋 靖崇, 高島 弘幸, 赤塚 吉紘, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 95 (8) S1638 - S1638 0021-5325 2021/08
  • 黄金 勲矢, 高島 弘幸, 山下 敏彦
    医学のあゆみ 医歯薬出版(株) 278 (1) 38 - 42 0039-2359 2021/07 
    近年、さまざまな機能的画像法が臨床応用されており、障害部位の同定のみならず痛みとの関連性についても報告されている。Magnetic resonance spectroscopy(MRS)は筋脂肪変性を筋細胞内脂肪(IMCL)と筋細胞外脂肪(EMCL)に分離して評価することが可能で、前者は有酸素代謝能に関連し、後者は代謝不活性の脂質とされる。本研究では多裂筋のIMCLの増加は腰痛の悪化、脊柱アライメント不良(腰椎前彎減少、前傾姿勢)、椎間板変性と関連が認められた。MRSを用いた多裂筋の画像解析は慢性腰痛の病態解析の一助となる可能性がある。(著者抄録)
  • 黄金 勲矢, 高島 弘幸, 寺島 嘉紀, 吉本 三徳, 竹林 庸雄, 山下 敏彦
    Journal of Spine Research (一社)日本脊椎脊髄病学会 12 (6) 819 - 824 1884-7137 2021/06 
    慢性腰痛患者における腰痛visual analogue score(VAS)と椎間板T2値,多裂筋と大腰筋の筋細胞内脂肪(intramyocellular lipids:IMCL)および筋細胞外脂肪(extramyocellular lipids:EMCL),脊柱骨盤アライメント,腰椎可動域の関連について検討した.腰痛VASはL4/5の後方線維輪のT2値と有意な負の相関(r=-0.49,p<0.01),多裂筋のIMCLと有意な正の相関(r=0.51,p<0.01),腰椎前彎角と有意な負の相関(r=-0.41,p<0.01),sagittal vertical axisと有意な正の相関(r=0.42,p<0.01)を認めた.L4/5の後方線維輪周囲の豊富な神経支配,IMCLの増加にともなう炎症,脊柱後彎による椎間板への負荷,筋内圧の上昇,筋虚血などが慢性腰痛の一因であると考えられた.(著者抄録)
  • Eisuke Sato, Kei Fukuzawa, Hiroyuki Takashima, Yuya Yamatani, Yasuo Takatsu, Junichi Hata, Keigo Hikishima, Kenta Miwa
    Applied Magnetic Resonance 52 (5) 619 - 631 0937-9347 2021/05 
    We aimed to examine the possibility that polyethylene glycol (PEG) phantoms can simulate apparent diffusion coefficients (ADCs) of malignant tumors and the effectiveness of PEG phantoms using three 3.0 T magnetic resonance imaging (MRI) systems. In particular, the correlations between PEG concentrations and ADC values, the validation of ADC measurement precision, and the stability and reproducibility of PEG phantom were verified. A phantom containing 0, 0.625, 1.250, 2.5, 5, 10, 20 mM PEG was assessed using three MRI systems. The endpoints comprised correlations between PEG concentrations and ADC, validation of ADC measurement precision and the stability and reproducibility of the PEG phantom. The correlation coefficients between PEG concentrations and the ADC of the three MRI systems and among the three MRI systems revealed negative (r ≈ − 1.000, P < 0.001) and positive (r ≈ 1.000, P < 0.001) correlations. The ADCmean of 2.5–20 mM PEG was significant (P < 0.05 t tests), and that at ≥ 10 mM PEG was < 1.0 × 10–3 mm2/s. The %CV ranged from 1.20 to 4.62, and repeatability was confirmed by the 90% confidence interval. The maximum values for DifferenceChange over time and DifferencePri.vs.New were 0.20 and 0.19 × 10–3 mm2/s, respectively. In this study, we found that PEG concentrations ≥ 10 mM are required to simulate the ADCs of malignant tumors (ADC < 1.0 × 10–3 mm2/s). We also showed that the ADC value is easily controlled by adjusting PEG concentrations, and can be stably measured using our PEG phantom for at least 6 months. The PEG phantom can easily and stably simulate the ADC of malignant tumors with high reproducibility.
  • Yukinori Akiyama, Rintaro Yokoyama, Hiroyuki Takashima, Yuka Kawata, Masayasu Arihara, Ryohei Chiba, Yusuke Kimura, Takeshi Mikami, Nobuhiro Mikuni
    Neurologia medico-chirurgica 61 (3) 211 - 218 0470-8105 2021/03/15 
    The clearance system in the brain is not completely understood. The aim of this study was to prove the presence of the "glymphatic system" in the human brain using magnetic resonance spectroscopy (MRS).Spectral data of the brain white matter were obtained from healthy volunteers and patients with hydrocephalic dementia and used to measure intracerebral metabolites, including macromolecules (MMs) and lipids. Data were transferred from the MRS scanners to a workstation, and metabolites were quantified with the spectrogram-based eddy current method and water scaling.MM levels were significantly higher in patients with a slow gait and executive dysfunction due to normal pressure hydrocephalus (NPH) than in asymptomatic volunteers (p <0.01). In contrast, the N-acetyl aspartate (NAA) level was significantly lower in patients with executive dysfunction than in asymptomatic volunteers (p <0.01). There were no statistically significant differences in metabolites, including alanine, aspartate, creatine, γ-amino butyric acid, D-glucose, glutamine, glutamate, glycerophosphorylcholine, phosphorylcholine, lactate, myoinositol, N-acetyl-aspartyl-glutamate, scyllo-inositol, taurine, creatine methylene, and guanine, in the centrum semiovale between patients with NPH and asymptomatic volunteers.We quantitatively evaluated cerebral metabolites, particularly in the centrum semiovale, with MRS. In the brain of patients with a slow gait and executive dysfunction due to NPH, MRS revealed significantly higher MM levels and lower NAA levels compared to healthy volunteers. Therefore, it may be concluded that the patients have a dysfunctional glymphatic system in the brain.
  • Izaya Ogon, Kousuke Iba, Hiroyuki Takashima, Yoshinori Terashima, Mitsunori Yoshimoto, Makoto Emori, Atsushi Teramoto, Tsuneo Takebayashi, Toshihiko Yamashita
    North American Spine Society journal 5 100044 - 100044 2021/03 
    BACKGROUND: The relation between segmental mobility and degree of lumbar degenerative change is still unknown. This cross-sectional study aimed to elucidate the association between intervertebral disc degeneration (IVDD) and segmental mobility in chronic low back pain using magnetic resonance imaging (MRI) T2 mapping. METHODS: Subjects comprised 60 patients (29 men, 31 women; mean age, 61.8 ± 1.9 years; range, 41-79 years). T2 values of the anterior annulus fibrosus (AF), the nucleus pulposus (NP) and the posterior AF were evaluated with MRI T2 mapping. Facet joint degeneration was divided into 4 grades using MRI. We analyzed the correlation between segmental mobility and T2 values of anterior AF, NP and posterior AF using multiple linear regression analysis adjusted for age and facet joint degeneration. RESULTS: The standardized partial regression coefficient of the anterior AF, NP and posterior AF T2 values were 0.125 (p=0.72), 0.499 (p<0.01) and -0.026 (p=0.11), respectively, for the L1-2 level; 0.102 (p=0.27), 0.395 (p<0.01) and -0.094 (p=0.20), respectively, for the L2-3 level; 0.108 (p=0.38), 0.415 (p<0.01) and -0.050 (p=0.51), respectively, for the L3-4 level; 0.124 (p=0.09), 0.396 (p<0.01) and 0.025 (p=0.73), respectively, for the L4-5 level; and 0.011 (p=0.89), 0.443 (p<0.01) and 0.030 (p=0.72), respectively, for the L5-S level. There was a significantly positive correlation between segmental mobility and the T2 values of NP at L1-L2, L2-L3, L3-L4, L4-L5, and L5-S1. No significant correlations arose between segmental mobility and the T2 values of the anterior AF and the posterior AF at L1-L2, L2-L3, L3-L4, L4-L5, and L5-S1. CONCLUSION: Characterization of the relationship between NP degeneration and lumbar segmental mobility may enhance our ability to evaluate the changes seen in kinematics of functional spinal unit.
  • Hiroshi Nagahama, Masahiko Wanibuchi, Toru Hirano, Mitsuhiro Nakanishi, Hiroyuki Takashima
    Acta neurochirurgica 163 (3) 619 - 624 0001-6268 2021/03 
    The cerebellum communicates with the cerebral cortex via the superior, middle, and inferior cerebellar peduncles (CPs). To preserve the structure and function of the brainstem and cerebellum, which is compressed in various pathological conditions, it is important to delineate the spatial interrelationship of the CPs for presurgical planning and intraoperative guidance. Diffusion tensor tractography (DTT) is a technique capable of depicting the major fiber bundles in CPs. However, routine use of this technology for brainstem visualization remains challenging due to the anatomical smallness and complexity of the brainstem and susceptibility-induced image distortions. Here, we attempt to visualize CPs using high-resolution DTT in a commercial equipment for the application of this technique in normal clinical settings. DTT and fast imaging employing steady-state acquisition-cycled phases (FIESTA) of the whole brainstem were performed. We rendered the DTT fiber bundle using a region-of-interest-based fiber tracking method onto the structural image generated in FIESTA by automatic image coregistration. Fibers of the CPs were clearly visualized by DTT. The DTT-FIESTA overlaid image revealed the cross-sectional and three-dimensional anatomy of the pyramidal tract and the ascending sensory fibers, in addition to the CPs. This could indicate a geometrical relationship of these fibers in the brainstem. The CPs could be visualized clearly using DTT within clinically acceptable scanning times. This method of visualizing the exact pathway of fiber bundles and cranial nerves in the skull base helps in the planning of surgical approaches.
  • Hiroyuki Takashima, Mitsuhiro Nakanishi, Rui Imamura, Yoshihiro Akatsuka, Hiroshi Nagahama, Izaya Ogon
    Radiological physics and technology 14 (1) 100 - 104 1865-0333 2021/03 
    In this study, the change in the image quality and apparent diffusion coefficient (ADC) with increase in the acceleration factor (AF) was analyzed and the most optimal AF was determined to reduce the scan time while preserving the image quality. The AF was changed from 2 to 20 in the MR acquisitions. The similarities between the accelerated and reference images were determined based on the structural similarity (SSIM) index for DWI image and coefficient of variation (%CV) for ADC. The SSIM index decreased significantly when the AF ≥ 8 compared with when the AF = 2 (p < 0.05). In the reference image, the %CV of the ADC increased significantly when the AF ≥ 10 (p < 0.01). In conclusion, a remarkable decrease in the image quality and ADC was observed when the AF was > 8. Thus, an AF < 8 would be optimal for reducing the scan time while preserving the image quality.
  • Izaya Ogon, Atsushi Teramoto, Hiroyuki Takashima, Yoshinori Terashima, Mitsunori Yoshimoto, Makoto Emori, Kousuke Iba, Tsuneo Takebayashi, Toshihiko Yamashita
    Journal of back and musculoskeletal rehabilitation 35 (5) 1035 - 1041 1053-8127 2021/02/16 
    BACKGROUND: Pain sensitization may be one of the mechanisms contributing to chronic low back pain (CLBP). OBJECTIVE: To evaluate the association between visceral fat, CLBP, and central sensitization (CS); describe the relationship between low back pain (LBP) intensity and CS; and identify possible correlation between visceral fat and LBP intensity. METHODS: Patients with CLBP were divided using their CS inventory (CSI) scores into low- (CSI < 40) and high-CSI (CSI ⩾ 40) subgroups. We compared computed tomography (CT) measurements and scores for association with pain according to the visual analogue scale (VAS) between the two groups. RESULTS: The low-CSI and the high-CSI groups had 47 patients (67.1%; 21 men, 26 women) and 23 patients (32.9%; 11 men and 12 women), respectively. The high-CSI group had a significantly higher mean VAS score (p< 0.01) and estimated mean visceral fat area (p< 0.05) than the low-CSI group. There was a moderate positive correlation between VAS score and visceral fat (standardised partial regression coefficient: 0.659, p< 0.01) in the high-CSI group according to multiple linear regression analysis adjusted for age and sex. CONCLUSIONS: Visceral fat is associated with CLBP, regardless of sex or age, and may be a potential therapeutic target for CLBP with CS.
  • Yasutaka Murahashi, Kousuke Iba, Atsushi Teramoto, Katsunori Takahashi, Yohei Okada, Tomoaki Kamiya, Hiroyuki Takashima, Kota Watanabe, Hirofumi Ohnishi, Toshihiko Yamashita
    The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons 60 (6) 1207 - 1211 1067-2516 2021 
    Plantar callosities under lesser metatarsals are often accompanied by the hallux valgus, and the cause of callosity is thought to be associated with the foot deformity, such as the metatarsal length discrepancy, the abnormal metatarsal head height, cavus, flat foot, and rheumatoid conditions. However, it is unclear which variable is most involved in the cause of callosity in hallux valgus deformity. To clarify the factors associated with the callosity with hallux valgus deformity, we conducted multiple image assessments based on weightbearing radiography and computed tomography. A retrospective review was performed based on the collection of clinical records from all patients with hallux valgus treated from 2010 to 2019 in our institution. We measured the hallux valgus angle, intermetatarsal angles, calcaneal pitch angles, talo-first metatarsal angles, metatarsal length, metatarsal head height, first metatarsal pronation angles, and sesamoid position with weightbearing radiography and computed tomography. We analyzed the relation between callosity formation and imaging assessments using univariate and multivariate logistic regression models. Fifty feet were retrospectively evaluated, and multiple logistic analyses by the stepwise method revealed that the first metatarsal-lateral-sesamoid distance was the only radiographical variable associated with callosity formation among all the tested variables (p < .001). As the grade of the callosity became more severe, the lateral shift of the lateral sesamoid increased. The position of the sesamoid bone appears to have a critical role in the assessment and choice of treatment protocols and further research needs to be conducted on the relationship with the position of sesamoid bone to elucidate the mechanism of callus formation.
  • 今村 塁, 高島 弘幸, 赤塚 吉紘, 寺本 篤史, 神谷 智昭, 岡田 葉平, 村橋 靖崇, 山下 敏彦, 渡邉 耕太
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 63 (139th suppl) 35 - 35 1343-3873 2021
  • Satoshi Katano, Toshiyuki Yano, Takanori Tsukada, Hidemichi Kouzu, Suguru Honma, Takuya Inoue, Yuhei Takamura, Ryohei Nagaoka, Tomoyuki Ishigo, Ayako Watanabe, Katsuhiko Ohori, Masayuki Koyama, Nobutaka Nagano, Takefumi Fujito, Ryo Nishikawa, Hiroyuki Takashima, Akiyoshi Hashimoto, Masaki Katayose, Tetsuji Miura
    Circulation journal : official journal of the Japanese Circulation Society 84 (12) 2224 - 2234 1346-9843 2020/11/25 
    BACKGROUND: The clinical significance of osteoporosis in chronic heart failure (CHF) remains unclear.Methods and Results:A total of 303 CHF patients (75 years, [interquartile range (IQR) 66-82 years]; 41% female) were retrospectively examined. Bone mineral densities (BMDs) at the lumbar spine, femoral neck, and total femur were measured by using dual-energy X-ray absorptiometry (DEXA), and osteoporosis was diagnosed when the BMD at any of the 3 sites was <70% of the Young Adult Mean percentage (%YAM). The prevalence of osteoporosis in CHF patients was 40%. Patients with osteoporosis were older (79 [IQR, 74-86] vs. 72 [IQR, 62-80] years), included a large percentage of females, had slower gait speed and had a lower body mass index. Multivariate logistic regression analysis indicated that sex, BMI, gait speed, loop diuretics use and no use of direct oral anticoagulants (DOACs) were independently associated with osteoporosis. Kaplan-Meier survival curves showed that the rate of death and heart failure hospitalization was higher in patients with osteoporotic BMD at 2 or 3 sites than in patients without osteoporosis (hazard ratio 3.45, P<0.01). In multivariate Cox regression analyses, osteoporotic BMD at 2 or 3 sites was an independent predictor of adverse events after adjustment for prognostic markers. CONCLUSIONS: Loop diuretics use and no DOACs use are independently associated with osteoporosis in CHF patients. Osteoporosis is a novel predictor of worse outcome in patients with CHF.
  • Kousuke Shiwaku, Tomoyuki Suzuki, Takashi Matsumura, Hiroyuki Takashima, Hidenori Otsubo, Toshihiko Yamashita
    The Knee 27 (5) 1293 - 1299 0968-0160 2020/10 
    BACKGROUND: The purpose of this study was to investigate postoperative tunnel widening after rectangular tunnel bone-patellar-tendon-bone graft anterior cruciate ligament reconstruction using newer-generation bioabsorbable interference screws. METHODS: Forty-six patients who had undergone primary rectangular tunnel bone-patellar-tendon-bone graft anterior cruciate ligament reconstruction using MILAGRO bioabsorbable interference screws (DePuy Synthes, Warsaw, IN, USA) for femoral fixation and for whom computed tomography was performed at two weeks and one year postoperatively were included in this prospective study. To assess the tunnel widening, the cross-sectional area of the femoral tunnel aperture (compared between two weeks and one year postoperatively) was assessed using computed tomography. Cyst formation, postoperative screw breakage, screw migration, and graft migration were also evaluated using computed tomography one year postoperatively. RESULTS: Mean tunnel widening was 1.9%, and the cross-sectional area of the femoral tunnel aperture was not significantly different between two weeks and one year postoperatively. Postoperative cyst formation, screw breakage, screw migration, and graft migration were not observed in any patient. CONCLUSIONS: After rectangular tunnel bone-patellar-tendon-bone graft anterior cruciate ligament reconstruction using bioabsorbable interference screws for femoral fixation, tunnel widening was not observed via computed tomography analysis at two weeks and one year postoperatively.
  • Izaya Ogon, Hiroyuki Takashima, Tomonori Morita, Tsutomu Oshigiri, Yoshinori Terashima, Mitsunori Yoshimoto, Makoto Emori, Atsushi Teramoto, Tsuneo Takebayashi, Toshihiko Yamashita
    Asian spine journal 14 (4) 430 - 437 1976-1902 2020/08 
    STUDY DESIGN: Cross-sectional observational study. PURPOSE: This study aimed to analyze any potential associations of extramyocellular lipid (EMCL) and intramyocellular lipid (IMCL) contents with (1) the intensity of low back pain (LBP); (2) age, cross-sectional area (CSA), and fatty infiltration (FI) of the psoas major; and (3) spinopelvic parameters. OVERVIEW OF LITERATURE: The psoas major has clinically relevant function; however, the association of this muscle with chronic LBP is controversial. Magnetic resonance spectroscopy enables a detailed analysis of the composition of muscular fat tissues such as its EMCL and IMCL contents. METHODS: The study population comprised 40 patients (19 males, 21 females; mean age, 61.7±2.4 years). Possible correlations of LBP Visual Analog Scale (VAS) scores, age, CSA, FI, and spinopelvic parameters with EMCL and IMCL contents of the psoas major were assessed. RESULTS: No association was identified between the EMCL and IMCL contents and LBP VAS scores (r=0.05, p=0.79 and r=0.06, p=0.75, respectively). The EMCL content correlated with age (r=0.47, p<0.01), body mass index (BMI) (r=0.44, p<0.01), CSA (r=-0.59, p< 0.01), and FI (r=0.49, p<0.01). EMCL content showed a significant negative correlation with sacral slope (SS) (r=-0.43, p<0.05) and positive correlation with pelvic tilt (PT) (r=0.56, p<0.01). CONCLUSIONS: EMCL content correlated with age, BMI, CSA, and FI of the psoas major, while IMCL content had no correlation. This study found correlations between SS and PT and EMCL content of the psoas major, but no correlations were found between spinopelvic parameters and IMCL content of the psoas major.
  • Hiroyuki Takashima, Mitsunori Yoshimoto, Izaya Ogon, Yoshinori Terashima, Rui Imamura, Yoshihiro Akatsuka, Noriyuki Iesato, Tsutomu Oshigiri, Tomonori Morita, Tsuneo Takebayashi, Makoto Emori, Atsushi Teramoto, Toshihiko Yamashita
    Magnetic resonance imaging 73 11 - 14 0730-725X 2020/07/14
  • MRI拡散強調像における前臨床研究のための画像評価用ファントムの開発
    高島 弘幸
    医療の広場 (公財)政策医療振興財団 60 (7) 8 - 10 2020/07
  • Yoshiya Ohashi, Hiroyuki Takashima, Goh Ohmori, Kohei Harada, Ayaka Chiba, Kanako Numasawa, Tatsuya Imai, Shun Hayasaka, Aya Itoh
    La Radiologia medica 125 (7) 618 - 624 0033-8362 2020/07 
    PURPOSE: To assess whether fusion 3D-CTA images can be corrected using non-rigid registration (NRR) for gastroenterology imaging. METHODS: This study included 55 patients before gastroenterology surgery who underwent preoperative 3D-CTA prior to gastroenterological surgery. We recorded the coordinate of measurement points on the arterial vessels (X, Y, and Z) in each portal phase, original image of the arterial phase, and arterial phase with NRR. The distance of misregistration between the two points was calculated with the coordinate of the original image with NRR and that of the portal phase as true value. RESULTS: The distance of misregistration between the two points in the original arterial and portal phase images was significantly higher than that in the arterial phase image with NRR on all directions (p < 0.01). CONCLUSIONS: This study showed that NRR may correct misregistration on fusion 3D-CTA imaging. Hence, it can visualize correctly the anatomy of the vessel.
  • 高島 弘幸, 黄金 勲矢, 竹林 庸雄, 押切 勉, 森田 智慶, 吉本 三徳, 寺島 嘉紀, 山下 敏彦
    Journal of Spine Research (一社)日本脊椎脊髄病学会 11 (6) 897 - 901 1884-7137 2020/06 
    慢性腰痛患者では,多裂筋の筋細胞内脂肪(intramyocellular lipids:IMCL)が上昇していることが報告されている.本研究では,慢性腰痛患者における多裂筋のIMCLが腰痛の経過とともにどのように変化するかを縦断的に解析した.腰痛VASの改善率とIMCLの変化率の間には,正の相関(r=0.818,p<0.001)が認められ,腰痛の改善とともにIMCLが低下する傾向であった.多裂筋のIMCLは,慢性腰痛と深い関連があることが示唆された.(著者抄録)
  • 圧縮センシングMRIは心筋T1mappingの空間分解能向上に貢献できるか
    中西 光広, 赤塚 吉紘, 今村 塁, 長濱 宏史, 高島 弘幸
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (88) 48 - 49 0912-0327 2020/04
  • 脳の圧縮センシングMRI 三次元等方性ボクセルスピンエコーの撮像時間は半減する
    長濱 宏史, 今村 塁, 赤塚 吉紘, 中西 光広, 高島 弘幸
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (88) 10 - 11 0912-0327 2020/04
  • 圧縮センシングMRIによる高倍速化が3D-TSE画像の解像度に与える影響
    今村 塁, 高島 弘幸, 中西 光広, 長濱 宏史, 赤塚 吉紘
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (88) 46 - 47 0912-0327 2020/04
  • 拡散強調像における圧縮センシングの併用はどこまで許容できるか
    高島 弘幸, 中西 光広, 長濱 宏史, 今村 塁, 赤塚 吉紘
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (88) 58 - 59 0912-0327 2020/04
  • APT-CESTにおける卵白粉を用いたpHイメージングの検討
    赤塚 吉紘, 高島 弘幸, 今村 塁, 長濱 宏史, 中西 光広
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (88) 60 - 61 0912-0327 2020/04
  • Izaya Ogon, Hiroyuki Takashima, Tomonori Morita, Tsutomu Oshigiri, Yoshinori Terashima, Mitsunori Yoshimoto, Ryunosuke Fukushi, Shutaro Fujimoto, Makoto Emori, Atsushi Teramoto, Tsuneo Takebayashi, Toshihiko Yamashita
    Asian spine journal 14 (5) 621 - 628 1976-1902 2020/03/30 
    Study Design: Cross-sectional study. Purpose: The purpose of this study was to elucidate the relevance among Schmorl's node (SN), chronic low back pain (CLBP), and intervertebral disc degeneration (IVDD) with the use of magnetic resonance imaging T2 mapping. Overview of Literature: SN may be combined with CLBP and/or IVDD; however, their relationship has not been determined to date. Methods: A total of 105 subjects were included (48 men and 57 women; mean age, 63.2±2.7 years; range, 22-84 years). We analyzed five functional spinal unit levels (L1-S1) and evaluated the T2 values of the anterior annulus fibrosus (AF), nucleus pulposus, and posterior AF. We compared the low back pain (LBP) Visual Analog Scale (VAS) scores and the T2 values in each decade with or without SN. Results: There were no remarkable differences in SN prevalence rate regarding age decade or gender. SNs were more prevalent in the upper 2 levels (70.3%). LBP VAS scores with and without SN were 64.7±4.3 mm and 61.9±2.8 mm, respectively, with no significant differences between the groups (p =0.62). The T2 values of anterior AF with SN were significantly lower than those without SN in patients in their 50s, 60s, 70s, and 80s (p <0.01). Conclusions: SN presence is not itself a risk factor for CLBP; however, it indicates IVDD of the anterior AF in subjects with SN who are ≥50 years old.
  • MR Spectroscopyを用いた尾部懸垂ラットにおける骨格筋脂肪の解析
    高島 弘幸, 黄金 勲矢, 寺島 嘉紀, 射場 浩介, 長濱 宏史, 山下 敏彦
    日本放射線技術学会総会学術大会予稿集 (公社)日本放射線技術学会 76回 253 - 253 1884-7846 2020/03
  • Izaya Ogon, Tsuneo Takebayashi, Hiroyuki Takashima, Tomonori Morita, Yoshinori Terashima, Mitsunori Yoshimoto, Toshihiko Yamashita
    JOR spine 3 (1) e1066  2572-1143 2020/03 
    Various functional magnetic resonance imaging (MRI) techniques have been investigated in recent years and are being used in clinical practice for the patients with low back pain (LBP). MRI is an important modality for diagnosing intervertebral disc (IVD) degeneration. In recent years, there have been several reported attempts to use MRI T2 mapping and MRI T1ρ mapping to quantify lumbar disc degeneration. MRI T2 mapping involves digitizing water content, proteoglycan content, and collagen sequence breakdown as relaxation times (T2 values) at each site. These digitized values are used to create a map, that is, then used to quantitatively evaluate the metabolite concentrations within IVD tissues. MRI T2 mapping utilizes the T2 relaxation time to quantify moisture content and the collagen sequence breakdown. MRI T1ρ mapping digitizes water molecule dispersion within the cartilaginous matrix to evaluate the degree of cartilaginous degeneration. Magnetic resonance spectroscopy is a less-invasive diagnostic test that provides biochemical information. Adequate analysis of the IVD has not yet been performed, although there are indications of a relationship between the adipose content of the multifidus muscle in the low back and LBP. The ultra short TE technique has been recently used to investigate lumbar cartilaginous endplates. Unlike diagnosis based on contrast-enhanced images of the IVD, which depends on the recurrence of pain that is determined subjectively, MRI-based diagnosis is less-invasive and based on objective imaging findings. It is therefore expected to play a key role in the diagnostic imaging of IVD conditions in the future.
  • 足部・足関節の画像解析-画像解析による病態の解明- 3D MRIによる足関節外側靱帯の評価
    寺本 篤史, 赤塚 吉紘, 今村 塁, 高島 弘幸, 神谷 智昭, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 94 (2) S45 - S45 0021-5325 2020/03
  • TKA術前下腿筋量は術後DVT発生に関連するか
    赤塚 吉紘, 寺本 篤史, 高島 弘幸, 岡田 葉平, 神谷 智昭, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 94 (3) S766 - S766 0021-5325 2020/03
  • Yasutaka Murahashi, Atsushi Teramoto, Shunsuke Jimbo, Yohei Okada, Tomoaki Kamiya, Rui Imamura, Hiroyuki Takashima, Kota Watanabe, Satoshi Nagoya, Toshihiko Yamashita
    The Knee 27 (2) 580 - 586 0968-0160 2020/03 
    BACKGROUND: Periprosthetic bone quality is one of the most important factors preventing early prosthesis migration and long-term failure. Although denosumab, which binds to the receptor activator of nuclear factor kappa-B ligand (RANKL), has been linked with periprosthetic bone mineral density (BMD), the effectiveness of denosumab against bone loss remains unclear. We hypothesized that denosumab treatment after total knee arthroplasty (TKA) could prevent periprosthetic bone resorption. METHODS: In this prospective cohort study, 28 patients with primary knee osteoarthritis were divided into two groups: denosumab (denosumab and vitamin D) and control (vitamin D only) groups. All patients underwent TKA with the same implant model and received medication after surgery. We used dual-energy X-ray absorptiometry to measure periprosthetic BMD after TKA. RESULTS: In the control group, the BMD of the proximal medial tibia decreased drastically at 12 months after TKA (-19.7%). Denosumab treatment significantly preserved this BMD loss (0.7%). The linear regression analysis revealed that denosumab intervention had the highest significantly positive relationship with BMD. CONCLUSIONS: Our results indicate that denosumab treatment significantly reduces periprosthetic BMD loss, even at the early stages after TKA. This therapeutic strategy may facilitate early stable fixation of the prosthesis which, in turn, may help to prevent early implant migration and reduce the need for revision surgery.
  • 黄金 勲矢, 高島 弘幸, 山下 敏彦
    Pharma Medica (株)メディカルレビュー社 38 (1) 49 - 53 0289-5803 2020/01
  • Izaya Ogon, Hiroyuki Takashima, Tomonori Morita, Tsutomu Oshigiri, Yoshinori Terashima, Mitsunori Yoshimoto, Tsuneo Takebayashi, Toshihiko Yamashita
    Spine surgery and related research 4 (2) 135 - 141 2432-261X 2020 
    INTRODUCTION: Although intervertebral disc degeneration (IVDD) and spinopelvic malalignment are likely key structural features of spinal degeneration and chronic low back pain (CLBP), the correlation analysis has not been fully conducted. This cross-sectional quantitative magnetic resonance imaging (MRI) T2 mapping study aimed to elucidate the association between IVDD and spinopelvic alignment in CLBP patients. METHODS: The subjects included 45 CLBP patients (19 men and 26 women; mean age, 63.8 ± 2.0 years; range, 41-79 years). The T2 values of the anterior annulus fibrosus (AF), the nucleus pulposus (NP), and the posterior AF were evaluated using MRI T2 mapping. We compared the possible correlations of spinopelvic parameters with T2 values of anterior AF, NP, and posterior AF using Pearson's correlation coefficient analysis. T2 values in these regions were classified into upper (L1-L2 and L2-L3), middle (L3-L4), and lower (L4-L5 and L5-S1) disc levels, and we analyzed the correlations with spinopelvic parameters. RESULTS: There were significant correlations of the anterior AF T2 values with lumbar lordosis (r = 0.51, p < 0.01), sacral slope (r = 0.43, p < 0.01), sagittal vertical axis (r = -0.40, p < 0.01), and pelvic tilt (r = -0.33, p < 0.01). In all lumbar levels, T2 values of anterior AF had significantly positive correlation with LL and significantly negative correlation with SVA. In lower disc level, T2 values of anterior AF had significantly positive correlation with SS and significantly negative correlation with PT. T2 values of NP and posterior AF had no significant correlations with spinopelvic parameters in all lumbar disc levels. CONCLUSIONS: In summary, this study indicated that the anterior AF degeneration is associated with hypolordosis of the lumbar spine, anterior translation of the body trunk, and posterior inclination of the pelvis in CLBP. Anterior AF degeneration in all lumbar disc levels was associated with hypolordosis of the lumbar spine and anterior translation of the body trunk. Anterior AF degeneration in lower disc level was associated with posterior inclination of the pelvis.
  • Hiroyuki Takashima
    Nihon Hoshasen Gijutsu Gakkai zasshi 76 (5) I  2020
  • 赤塚 吉紘, 高島 弘幸, 寺本 篤史, 岡田 葉平, 神谷 智昭, 山下 敏彦, 渡邉 耕太
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 62 (138th suppl) 76 - 76 1343-3873 2020
  • 藤田 直輝, 三木 貴弘, 渡邊 勇太, 高島 弘幸, 竹林 庸雄, 小熊 大士, 阿部 恭久, 鈴木 智之, 大西 史師, 黒田 未来, 山崎 生久男, 山村 恵
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 62 (138th suppl) 13 - 13 1343-3873 2020
  • Takahiro Miki, Fujita Naoki, Hiroyuki Takashima, Tsuneo Takebayashi
    Progress in rehabilitation medicine 5 20200015 - 20200015 2020 
    Objective: The purpose of this study was to examine the relationships between intervertebral disc degeneration in the lumbar spine, paraspinal muscle morphology, and clinical features in patients with lumbar spinal stenosis (LSS). Methods: A total of 52 patients with LSS participated in this study. Magnetic resonance imaging was used to assess intervertebral disc degeneration at L4/5 and to measure the standardized cross-sectional areas (SCSAs) of the multifidus and erector spinae muscles. The intensity of low back pain (LBP) and lower limb pain, the level of disability, and the quality of life (QoL) were evaluated using patient-reported outcome measures. The associations between the image findings and clinical features, including the disability score, the pain score for low back pain, and the QoL score, were calculated using Spearman's rank correlation coefficient. Results: No associations were found between disc degeneration and clinical features. However, disc degeneration and the SCSA of the multifidus muscle (r=-0.38, P <0.01) and of the erector spinae muscle (r=-0.29, P=0.04) were significantly associated. Analysis of the associations between muscle morphology and clinical features found that the SCSA of the multifidus muscle was associated with LBP (r=0.31, P=0.03). Conclusions: These results suggest that there is some correlation between atrophy of the multifidus and pain intensity. Consequently, focusing on the CSA of the multifidus muscle may help to clarify the causes of LBP in patients with LSS. However, because of the cross-sectional nature of this study, causal relationships could not be determined and further research is needed.
  • Atsushi Teramoto, Yoshihiro Akatsuka, Hiroyuki Takashima, Hiroaki Shoji, Yuzuru Sakakibara, Kota Watanabe, Toshihiko Yamashita
    Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association 25 (1) 183 - 187 0949-2658 2020/01 
    BACKGROUND: With ultrasonography or 2D magnetic resonance imaging (MRI) of the lateral ankle ligament, it is particularly difficult to show the entire calcaneofibular ligament (CFL). The purpose of this study was to evaluate the morphological characteristics of the lateral ankle ligaments in injured patients and uninjured controls using 3D MRI. METHODS: A total of 64 ankles of 59 healthy volunteers and lateral ligament injury patients (mean age of 32.4 years) were examined. The 64 ankles included a healthy group of 11 ankles, an acute injury group of 12 ankles that underwent MRI a month after injury, and a chronic injury group of 41 ankles that underwent MRI more than 3 months after injury. Using a 3.0-T MRI system, imaging was done with fast imaging employing steady-state acquisition cycled phases. Oblique sagittal images that most clearly depicted the entire anterior talofibular ligament (ATFL) and CFL were prepared manually and evaluated using a workstation. RESULTS: In the healthy group, both the ATFL and CFL were clearly and entirely visualized. The mean width in the central portion was 4.0 ± 1.0 mm in the ATFL and 4.8 ± 0.6 mm in the CFL. 3D MRI in the acute injury group showed findings of diffuse swelling with hyperintensity in the ATFL of all patients. The CFL in 7 of 12 ankles showed findings of diffuse swelling with hyperintensity. In the chronic injury group, morphological abnormalities of the ATFL were seen in 19 of 41 ankles. The ligament signal disappeared in 2 ankles, thinned in 4 ankles, and showed swelling in 13 ankles. Morphological abnormalities of the CFL were seen in 17 of 41 ankles. The ligament signal disappeared in 1 ankle, thinned in 2 ankles, and showed swelling in 14 ankles. CONCLUSION: 3D MRI may be a useful modality to visualize both the ATFL and the CFL.
  • Tomonori Morita, Mitsunori Yoshimoto, Yoshinori Terashima, Katsumasa Tanimoto, Noriyuki Iesato, Izaya Ogon, Tsutomu Oshigiri, Atsushi Teramoto, Makoto Emori, Hiroyuki Takashima, Ryosuke Hirota, Shutaro Fujimoto, Toshihiko Yamashita
    Spine 45 (1) 48 - 54 0362-2436 2020/01/01 
    STUDY DESIGN: A retrospective cohort study of consecutive patients. OBJECTIVE: To investigate whether adequate flexion-extension was acquired in standard functional radiographs in lumbar spondylolisthesis. SUMMARY OF BACKGROUND DATA: In lumbar spondylolisthesis, flexion-extension radiographs taken in the standing position are most commonly used to evaluate spinal instability. However, these functional radiographs occasionally depend on the patient's effort and cooperation, they can provide different results. METHODS: This study included 92 consecutive patients diagnosed with L4-5 degenerative lumbar spondylolisthesis. We analyzed the flexion-extension radiographs taken with the patient being led by the hand (LH) and those taken without LH (NLH). Sagittal translation (ST), segmental angulation (SA), posterior opening (PO), and lumbar lordosis (LL) were measured on functional radiographs taken in both tests. Then, ST, SA, PO, detection rate of instability, and LL observed in LH were compared with those observed in NLH. Furthermore, the correlation of the difference was evaluated between ST, lumbar angulation, and LL. RESULTS: A relative value of ST was 9.5% ± 4.3% in LH and 5.6% ± 3.3% in NLH, which differed significantly (P < 0.001). SA and PO were also significantly greater in LH than in NLH. The detection rate of instability was 71.7% in LH and 30.4% in NLH (P < 0.001). LL measurement on flexion showed 17.6° ± 13.5° in LH and 28.2° ± 12.2° in NLH, which differed significantly (P < 0.001). However, no significant difference was found in LL on extension between LH and NLH. There was a moderate correlation between the difference of ST, SA, PO, and LL on flexion. CONCLUSION: Flexion with physical assistance was useful for the detection of abnormal lumbar mobility. Taking radiation exposure into consideration, physical assistance such as using a table in front of a patient could lead the similar evaluation of the segmental instability. LEVEL OF EVIDENCE: 2.
  • Ryunosuke Fukushi, Izaya Ogon, Yoshinori Terashima, Hiroyuki Takashima, Tsutomu Oshigiri, Noriyuki Iesato, Mitsunori Yoshimoto, Makoto Emori, Atsushi Teramoto, Toshihiko Yamashita
    Case reports in orthopedics 2020 3795035 - 3795035 2020 
    A 50-year-old man presented to the clinic with severe neck pain, fever, and difficulty breathing and was subsequently admitted to the local orthopedics department with possible retropharyngeal abscess and pyogenic spondylitis. Antibiotic therapy was initiated; however, due to poor oxygenation, he was referred and transferred to our department and admitted. Magnetic resonance imaging showed signal changes at the left C1/2 lateral atlantoaxial joint, posterior pharynx, longus colli muscle, carotid space, and medial deep cervical region, predominantly on the left side. In addition, despite lymph node enlargement from the posterior pharynx to the deep cervical region, there was no abscess formation. There were no signs of a space-occupying lesion or signal changes in the jugular foramen. One day postadmission, the patient's temperature had risen to 39.1°C and his SpO2 had fallen. His neck pain had also worsened, and emergency surgery was decided. Preoperatively, we suspected retropharyngeal abscess and pyogenic spondylitis. On day 13 postadmission, the patient exhibited dysphagia, deviated tongue protrusion, and the curtain sign. Glossopharyngeal and hypoglossal nerve paralysis were diagnosed. The patient's swallowing functions recovered and he was discharged on day 36. We experienced a case of glossopharyngeal and hypoglossal nerve paralysis secondary to pyogenic cervical facet joint arthritis.
  • 藤田 直輝, 三木 貴弘, 高島 弘幸, 竹林 庸雄
    Journal of Musculoskeletal Pain Research (一社)日本運動器疼痛学会 11 (4) S59 - S59 2186-2796 2019/11 [Refereed][Not invited]
  • 高島 弘幸, 小倉 圭史, 山下 敏彦
    整形・災害外科 金原出版 62 (11) 1399 - 1402 0387-4095 2019/10/01 
    <文献概要>Dual energy CT(DECT)は,異なる2つのエネルギーを用いて画像データを取得する手法である。整形外科領域では,特に金属アーチファクトの低減に関する有用性が知られている。まだ発展途上の分野でもあり,限られた新しい装置でなければ施行不可能な技術ではあるが,今後も様々な側面から研究が行われ,その有用性が確立されることを期待する。
  • 足関節外側靱帯におけるMRI 3Dシーケンスの比較
    赤塚 吉紘, 寺本 篤史, 高島 弘幸, 今村 塁, 中西 光広, 神谷 智昭, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 93 (8) S1734 - S1734 0021-5325 2019/09
  • 造影剤の到達遅延症例におけるBT法のトリガーCT値の検討
    大橋 芳也, 原田 耕平, 千葉 彩佳, 沼澤 香夏子, 今井 達也, 早坂 駿, 高島 弘幸
    日本放射線技術学会雑誌 (公社)日本放射線技術学会 75 (9) 1076 - 1076 0369-4305 2019/09 [Refereed][Not invited]
  • 黄金 勲矢, 竹林 庸雄, 高島 弘幸, 森田 智慶, 寺島 嘉紀, 吉本 三徳, 山下 敏彦
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 61 (1) 19 - 22 1343-3873 2019/08 
    近年、様々な機能的画像法の研究が進み臨床応用されており、障害部位を同定するのみならず痛みとの関連についても報告されている。Magnetic resonance spectroscopy(MRS)は筋脂肪変性を筋細胞内脂肪と筋細胞外脂肪に分離して評価することが可能で、前者は有酸素代謝に関連し、後者は代謝不活性の脂質である。多裂筋の筋細胞外脂肪の増加は腰痛の悪化および脊柱アライメント不良(腰椎前彎減少、前傾姿勢)と関連があった。MRSを用いた筋肉の画像解析は慢性腰痛診断の一助となる可能性がある。(著者抄録)
  • Izaya Ogon, Tsuneo Takebayashi, Hiroyuki Takashima, Tomonori Morita, Tsutomu Oshigiri, Yoshinori Terashima, Mitsunori Yoshimoto, Toshihiko Yamashita
    Asian spine journal 13 (4) 601 - 607 1976-1902 2019/08 
    STUDY DESIGN: Cross-sectional study. PURPOSE: To determine the association between fatty degeneration of the multifidus muscle (Mm) and intervertebral disc degeneration (IVDD) using quantitative magnetic resonance imaging (MRI). OVERVIEW OF LITERATURE: Few studies have reported on quantitative MRI analysis of the relation between the Mm and IVDD. METHODS: The subjects with chronic low back pain comprised 45 patients (19 males, 26 females; mean age, 63.8±2.0 years; range, 41-79 years). We analyzed the intramyocellular lipids (IMCL) and extramyocellular lipids (EMCL) of the Mm using magnetic resonance spectroscopy. The T2 values of the anterior annulus fibrosus (AF), nucleus pulposus (NP), and posterior AF were evaluated using MRI T2 mapping. We compared the possible correlations of IMCL and EMCL of the Mm with the T2 values of anterior AF, NP, and posterior AF. RESULTS: There was a significant negative correlation between IMCL and T2 values of the anterior AF (r=-0.65, p<0.01). There were no significant correlations between the IMCL and T2 values of NP (r=-0.16, p=0.30) and posterior AF (r=0.07, p=0.62). There were no significant correlations between the EMCL and T2 values of the anterior AF (r=-0.11, p=0.46), NP (r=0.15, p=0.32), and posterior AF (r=0.07, p=0.66). After adjustment for age and sex using multiple linear regression analysis, there was a significant negative correlation between the IMCL and T2 values of anterior AF (standardized partial regression coefficient=-0.65, p<0.01). CONCLUSIONS: The results indicated that IMCL of the Mm might be accompanied with anterior AF degeneration. Therapeutic exercises using IMCL of the Mm as evaluation index might have the potential to identify novel targets for the treatment and prevention of IVDD.
  • Imamura Rui, Takashima Hiroyuki, Nakanishi Mitsuhiro, Akatsuka Yoshihiro, Nagahama Hiroshi, Okuaki Tomoyuki, Yoneyama Masami, Hatakenaka Masamitsu
    APPLIED MAGNETIC RESONANCE 50 (8) 959 - 966 0937-9347 2019/08 [Refereed][Not invited]
     
    To investigate the effect of the number of spin-lock (SL) and T2 preparation pulse using T1rho and T2 values obtained from the combined T1rho and T2 sequence. We included 30 patients who underwent magnetic resonance imagingof the lumbar spine because of low back pain and leg numbness, tingling, and pain. We used 3D turbo-field echo and the adiabatic pulse as SL pulse for T1rho mapping and the block pulse as T2 preparation pulse for T2 mapping of the combined T1rho and T2 sequence. The preparation time of T1rho and T2 was set at 0, 20, 40, 60, and 80ms. We defined the T1rho and T2 values calculated from all SL and T2 preparation pulses as Dfull and decreased several number of SL and T2 preparation pulses from Dfull as other groups (D1, D2, and D3). We used the Bland-Altman analyses to estimate the systematic and proportional bias between Dfull and other groups. The 95% CI of the mean difference included zero in all groups. Therefore, systematic bias was not detected. The regression coefficients with D3 of the T1rho and T2 value were -0.34 and -0.23, respectively (p<0.01). We detected the proportional bias in the T1rho and T2 values in only D3 (0 and 80ms). An investigation of the T1rho and T2 values of IVDs using the combined T1rho and T2 sequence suggested that the accuracy of these values decreased with suitably adjusted three preparation pulses, facilitating the assessment of both T1rho and T2 values at approximately 10min.
  • 3D MRI斜位断面による遠位脛腓靱帯結合の描出能
    寺本 篤史, 赤塚 吉紘, 小路 弘晃, 高島 弘幸, 神谷 智昭, 渡邉 耕太, 山下 敏彦
    日本足の外科学会雑誌 (一社)日本足の外科学会 40 (Suppl.) S309 - S309 0916-7927 2019/07
  • 高島 弘幸, 吉本 三徳, 竹林 庸雄, 家里 典幸, 今村 塁, 赤塚 吉紘, 寺島 嘉紀, 谷本 勝正, 黄金 勲矢, 山下 敏彦
    Journal of Spine Research (一社)日本脊椎脊髄病学会 10 (6) 944 - 947 1884-7137 2019/06 
    T2値が短い組織を評価可能なultra-short TE(UTE)を用いて、変性椎間板のT2*値を計測し、腰痛との関連について解析した。T2*値は、椎間板変性の進行に伴い、有意に低下し、L4/5およびL5/SのT2*値と腰痛VASに負の相関が認められた。椎間板のT2*値の解析は、高度の変性椎間板の判別も可能であり、椎間板性腰痛の解析に有用である可能性が示唆された。(著者抄録)
  • Izaya Ogon, Tsuneo Takebayashi, Hiroyuki Takashima, Tomonori Morita, Noriyuki Iesato, Katsumasa Tanimoto, Yoshinori Terashima, Mitsunori Yoshimoto, Toshihiko Yamashita
    Asian spine journal 13 (3) 403 - 409 1976-1902 2019/06 
    STUDY DESIGN: Cross sectional study. PURPOSE: The study aimed to analyze mechanisms underlying chronic low back pain (CLBP) using magnetic resonance imaging (MRI) T2 mapping of the intervertebral disc (IVD). OVERVIEW OF LITERATURE: MRI T2 mapping utilizes the T2 values for quantifying moisture content and collagen sequence breakdown. We previously used MRI T2 mapping for quantifying the extent of IVD degeneration (IVDD) and showed a correlation between the degeneration of the posterior annulus fibrosus (AF) and CLBP. METHODS: We enrolled 40 patients with CLBP (17 males, 23 females; mean age, 50.8±1.6 years; range, 22-60 years). IVDs were categorized as the anterior AF, nucleus pulposus (NP), and posterior AF, and T2 value for each disc was measured. T2 values, assessed using the Japanese neuropathic pain (NeP) screening questionnaire, of the NeP and nociceptive pain (NocP) groups were compared. RESULTS: T2 values of the NocP and NeP groups were 64.7±5.6 ms and 58.1±2.3 ms for the anterior AF; 67.0±4.6 ms and 59.6±2.1 ms for NP; and 70.7±4.6 ms and 51.0±1.2 ms for the posterior AF, respectively. T2 values for IVDD were significantly lower in the NeP group than those in the NocP group (p<0.01). CONCLUSIONS: The results indicate a correlation between the degeneration of posterior AF and NeP. MRI T2 mapping may be beneficial for detecting NeP caused by IVDD and can help formulate targeted analgesic therapies.
  • 塩泡 孝介, 鈴木 智之, 松村 崇史, 山下 敏彦, 高島 弘幸, 大坪 英則
    整形・災害外科 金原出版(株) 62 (6) 791 - 796 0387-4095 2019/05 
    <文献概要>本調査の目的は,生体吸収性インターフェランススクリュー(B-IFS)により大腿骨側の固定を行った骨付き膝蓋腱を用いた長方形骨孔前十字靱帯再建術(RT BTB法)について,術後1年のCTによる合併症調査を行い,安全性を検討することである。対象は,RT BTB法を施行され,術後2週目と術後1年目にCTを撮影した29膝である。平均年齢は32.1歳,男性14膝であった。術後1年のCTにて合併症(骨嚢胞形成,術後のB-IFSの折損や脱転,移植骨片脱転)の有無を調査した。術後2週と術後1年のCTの大腿骨骨孔開口部面積を比較した。骨嚢胞形成,術後のB-IFS折損や脱転,移植骨片脱転を認めた例はなく,骨孔面積の変化は平均で1.1±22.8%で有意な骨孔拡大を認めなかった。B-IFSを用いたRT BTB法では,骨嚢胞形成などの合併症や有意な骨孔拡大を認めず,安全性が確認された。
  • Izaya Ogon, Tsuneo Takebayashi, Hiroyuki Takashima, Tomonori Morita, Mitsunori Yoshimoto, Yoshinori Terashima, Toshihiko Yamashita
    Spine surgery and related research 3 (2) 163 - 170 2432-261X 2019/04/27 
    INTRODUCTION: Magnetic resonance spectroscopy (MRS) enables detailed analysis of the composition of muscular fat tissues such as intramyocellular lipids (IMCLs) and extramyocellular lipids (EMCLs). The aim of this study was to analyze the EMCL and IMCL of the multifidus muscle (Mm) using MRS in chronic low-back pain (CLBP) patients and identify their possible correlations with age, body mass index (BMI), low-back pain (LBP) visual analog scale (VAS) score, cross-sectional area (CSA), and fat infiltration of the Mm. METHODS: Eighty patients (32 men and 48 women; mean age, 64.7 ± 1.3 years; range, 22-83 years) with VAS scores >30 mm for CLBP were included. We analyzed the gender difference and the possible correlations of age, BMI, LBP VAS, CSA, and fat infiltration of the Mm with the IMCL and EMCL of the Mm. The subjects were divided into five groups as per their age range: < 40s, 50s, 60s, 70s, and 80s. We also analyzed the EMCL and IMCL of the Mm as per the fat infiltration classification. RESULTS: CSA was larger in the male group, EMCL was higher in the female group, and there was no significant difference in IMCL between the female and male groups. There was a significant positive correlation of EMCL with age (r = 0.33, p < 0.01) and BMI (r = 0.42, p < 0.01) and a significant negative correlation of EMCL with CSA (r = -0.61, p < 0.01). There was a significant positive correlation between IMCL and VAS (r = 0.43, p < 0.01). The EMCL and CSA of the Mm decreased with age, whereas fat infiltration increased with age. CONCLUSIONS: These results suggest that EMCL could indicate Mm degeneration associated with aging, and IMCL could be an effective objective indicator of CLBP. The EMCL and IMCL of the Mm may be useful prognostic markers in rehabilitation strategies.
  • 高島 弘幸, 吉本 三徳, 竹林 庸雄, 今村 塁, 赤塚 吉紘, 山下 敏彦
    別冊整形外科 (株)南江堂 (75) 16 - 19 0287-1645 2019/04
  • 椎体骨折におけるintravoxel incoherent motion(IVIM)パラメータの解析
    今村 塁, 高島 弘幸, 竹林 庸雄, 吉中 宣康, 赤塚 吉紘
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (86) 34 - 35 0912-0327 2019/04
  • 足関節外側靱帯 isotropic 3D fast spin-echoとbalanced fast field-echoの比較
    赤塚 吉紘, 高島 弘幸, 今村 塁, 中西 光広
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (86) 44 - 45 0912-0327 2019/04
  • 胃CT perfusionにおける撮影間隔による解析精度の評価
    沼澤 香夏子, 原田 耕平, 大橋 芳也, 千葉 彩佳, 今井 達也, 早坂 駿, 大森 剛, 伊藤 彩, 高島 弘幸
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (86) 30 - 31 0912-0327 2019/04 [Refereed][Not invited]
  • Hiroyuki Takashima, Mika Yanagida, Rui Imamura, Mitsunori Yoshimoto, Izaya Ogon, Mitsuhiro Nakanishi, Yoshihiro Akatsuka, Tomoyuki Okuaki, Masami Yoneyama, Masamitsu Hatakenaka, Toshihiko Yamashita
    APPLIED MAGNETIC RESONANCE 50 (1-3) 381 - 389 0937-9347 2019/03 
    The ultra-short TE (UTE) technique has been recently used to investigate lumbar cartilaginous endplates (CEPs). However, parameters of UTE have not been investigated, especially optimal second TE is unclear. The aim of this study was to investigate the use of an optimal second TE with UTE for visualizing CEPs. The subjects included 20 volunteers without LBP who did not undergo lumbar spine surgery. A UTE sequence with fat suppression was used, and TEs were set at 0.16ms as first TE, and 4.6, 9.2, 13.8, 18.2ms as second TE. Analyzed images subtracted each second TE image from first TE image. Two researchers measured contrast ratio (CR) between CEPs and vertebral bodies (VBs), intervertebral discs (IVDs). ICCs between two researchers were calculated for CRs (r=0.924, 0.939). CR between CEP and VB of 13.8 and 18.4ms was significantly higher than that of other TEs (p<0.01). CR between CEP and IVD of 9.2 and 13.8ms was significantly higher than that of other TEs (p<0.01, 0.05). CEPs were evaluated using subtraction images obtained with UTE. The first TE was 0.16ms, the optimal second TE was suggested to be 13.8ms for evaluating human CEPs.
  • 3D MRIを用いた足関節外側靱帯の腓骨側付着部の検討
    赤塚 吉紘, 寺本 篤史, 高島 弘幸, 神谷 智昭, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 93 (2) S153 - S153 0021-5325 2019/03
  • Yoshihiro Akatsuka, Atsushi Teramoto, Hiroyuki Takashima, Kota Watanabe, Toshihiko Yamashita
    Surgical and radiologic anatomy : SRA 41 (3) 307 - 311 0930-1038 2019/03 
    PURPOSE: Evaluating images of the lateral ligament of the ankle is not easy, and evaluation of the calcaneofibular ligament (CFL) in particular is difficult. We prospectively conducted morphological measurements of the CFL in different ankle positions and obtain basic data for use in functional assessment of the CFL, diagnosis of CFL injury, and determination of treatment effects. METHODS: The subjects were ten healthy volunteers (ten ankles) with a mean age of 27.8 years and no history of ankle disease. Imaging was done using a 3-T magnetic resonance imaging (MRI) machine and fast imaging employing steady-state acquisition cycled phases (FIESTA-C), a three-dimensional (3D) sequence, with the ankle in a neutral position, maximum dorsiflexion, and maximum plantar flexion. 3D images of the CFL, peroneal muscle tendons, fibula, and calcaneus were prepared at a workstation, and morphological measurements of the CFL were made. RESULTS: In all positions, the CFL showed a gently curving course with the peroneal muscle tendons as a fulcrum. The tortuosity angle was significantly smaller in plantar flexion (30.0° ± 7.4°) than in the neutral position (41.7° ± 8.3°). CONCLUSIONS: 3D MRI sequences showed that, in all positions, the CFL curved due to the influence of the peroneal muscle tendons. With maximum plantar flexion, the CFL tortuosity angle was small, which was thought to have been due to the tension in the CFL.
  • 赤塚 吉紘, 高島 弘幸, 今村 塁, 中西 光広, 寺本 篤史, 神谷 智昭, 山下 敏彦, 渡邉 耕太
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 61 (137th suppl) 69 - 69 1343-3873 2019
  • 高島 弘幸, 山下 敏彦
    関節外科 (株)メジカルビュー社 37 (12) 1310 - 1317 0286-5394 2018/12 
    最近の画像診断機器の進歩は著しく、MRIでは、さまざまな定量的画像解析法が開発されている。椎間板におけるT2、T1rho、T2*mapや終板イメージング、傍脊柱筋の脂肪量解析など多くの報告があり、腰痛との関連について研究されている。主観的な腰痛をこれらの画像解析法により客観的に可視化するためにはまだ課題があるが、新たな診断法として病態の解明や治療法の開発につながることを期待する。(著者抄録)
  • Hiroyuki Takashima, Tsuneo Takebayashi, Mitsunori Yoshimoto, Maki Onodera, Yoshinori Terashima, Noriyuki Iesato, Katsumasa Tanimoto, Izaya Ogon, Tomonori Morita, Toshihiko Yamashita
    The British journal of radiology 91 (1092) 20180262 - 20180262 0007-1285 2018/12 
    OBJECTIVE:: Prior studies advocate the subjective visual differences between meningioma and schwannoma on T2 weighted images, however objective measurement of signal intensity differences may be useful in certain cases. The aim of this study was to investigate whether an objective evaluation of SIs on T2 weighted images would be useful to differentiate spinal schwannomas from meningiomas. METHODS:: The patients with spinal MRIs demonstrating path proven and subsequently treated intradural extramedullary spinal tumors were selected between April 2008 and May 2017. Regions of interest (ROIs) were measured in the tumor and subcutaneous fat on the same image, and we calculated the SI ratio between tumor and fat ROIs. RESULTS:: Twenty patients each with meningioma and schwannoma were enrolled. The SI ratios of schwannomas were significantly higher than those of meningiomas (both researcher 1 and 2: p = 0.002). The areas under the curve by researchers 1 and 2 were 0.780. The cutoff value of SI ratio by both of researchers 1 and 2 to differentiate between schwannomas from meningiomas was 0.420 (sensitivity: 80.0%, specificity: 70.0-75.0%). CONCLUSION:: The SI ratio, calculated from the SIs of the tumor and fat on T2 weighted images, is useful for differentiating spinal schwannomas from meningiomas to obtain an accurate diagnosis. ADVANCES IN KNOWLEDGE:: Signal intensity ratio of the spinal tumor and fat on T2 weighted images is useful for differentiating schwannomas from meningiomas to obtain an accurate diagnosis.
  • Hiroyuki Takashima, Tsuneo Takebayashi, Mitsunori Yoshimoto, Maki Onodera, Izaya Ogon, Tomonori Morita, Noriyuki Iesato, Yoshinori Terashima, Katsumasa Tanimoto, Toshihiko Yamashita
    Spine surgery and related research 2 (4) 263 - 269 2432-261X 2018/10/26 
    INTRODUCTION: Gender differences may play a role in the pathogenesis of lumbar spinal stenosis. However, few reports that discuss the effects of gender differences in ligamentum flavum (LF) hypertrophy have been published, and no study has investigated the relationship between LF thickness and the quantitative value of intervertebral disc (IVD) degeneration. This study aimed to investigate the impact of gender on the pathomechanisms underlying LF hypertrophy, focusing on the relationship among LF thickness, IVD degeneration, and age. METHODS: The subjects include 100 patients with low back pain and leg numbness, tingling, or pain. We measured LF thickness and the T2 values of IVDs using MR imaging and analyzed the relationship among LF thickness, T2 values of IVDs, and age. The interclass correlation coefficient (ICC) was calculated as the inter-rater reliability between the LF thickness values measured by two investigators. RESULTS: ICC was calculated for the two measurements of LF thickness (r = 0.923, 95% CI: 0.907-0.936). No statistically significant difference in the T2 values of IVDs was observed between females and males from L2/3 to L5/S. There were significantly negative linear correlations between LF thickness and the T2 values of IVDs at all levels, but this correlation was not observed in females at L4/5. There were significantly negative linear correlations between age and the T2 values of IVDs from L2/3 to L5/S for all patients, females, and males (r = 0.422-0.756). In addition, there were significantly positive linear correlations between age and LF thickness from L2/3 to L4/5 for all patients (r = 0.329-0.361) and females (r = 0.411-0.481). Correlations were not observed for males at all levels or for all patients at L5/S. CONCLUSIONS: The relationships identified among LF thickness, age, and IVD degeneration suggest that gender differences play a role in the pathogenesis of LF hypertrophy.
  • 鈴木 大輔, 名越 智, 岡崎 俊一郎, 喜沢 史弥, 高島 弘幸, 舘田 健児, 小助川 維摩, 佐々木 幹人, 山下 敏彦
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 60 (1) 149 - 150 1343-3873 2018/08
  • Cutting Edge on Clinical Management of Chronic Lateral Ankle Instability MR Imaging of Chronic Lateral Ankle Instability MRIで何がわかるか
    寺本 篤史, 赤塚 吉紘, 高島 弘幸, 小路 弘晃, 榊原 醸, 神谷 智昭, 渡邉 耕太, 山下 敏彦
    JOSKAS (一社)日本関節鏡・膝・スポーツ整形外科学会 43 (4) 456 - 456 1884-8842 2018/05
  • 赤塚 吉紘, 高島 弘幸, 今村 塁, 寺本 篤史, 鈴木 智之, 岡田 葉平, 木井 雄一郎, 山下 敏彦, 渡邉 耕太
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 59 (2) 285 - 285 1343-3873 2018/03
  • Hiroyuki Takashima, Tsuneo Takebayashi, Izaya Ogon, Mitsunori Yoshimoto, Tomonori Morita, Rui Imamura, Mitsuhiro Nakanishi, Hiroshi Nagahama, Yoshinori Terashima, Toshihiko Yamashita
    British Journal of Radiology 91 (1083) 20170536 - 20170536 0007-1285 2018 [Refereed][Not invited]
     
    Objective: To analyse the intra- (IMCL) and extramyocellular lipids (EMCL) concentration in the multifidus muscle (Mm) using MR spectroscopy (MRS) in patients with low back pain (LBP), and to evaluate the correlation between those lipid concentrations and age, obesity, atrophy of the Mm and LBP intensity. Methods: 60 LBP patients underwent routine diagnostic MRI of the lumbar spine before undergoing imaging for the study. Body mass index, as an indicator of obesity and visual analogue scale, as an indicator of LBP were also measured. Proton MRS was acquired with a single-voxel point-resolved spectroscopy sequence. Furthermore, the MRS volume of interest for measuring the IMCL and EMCL concentration at L4/5 for the right Mm was determined, and we measured the cross-sectional area of Mm as an indicator of muscle atrophy. Results: Age showed correlation with EMCL concentration (r = 0.314, p = 0.008). The body mass index showed correlation with EMCL concentration (r = 0.358, p = 0.005). The cross-sectional area of Mm showed correlation with EMCL concentration (r = −0.543, p < 0.001). Moreover, the LBP visual analogue scale showed correlation with IMCL concentration (r = 0.367, p = 0.004). Conclusion: There were correlations between age, obesity, muscle atrophy, and EMCL concentration in Mm. IMCL concentration in Mm showed a correlation with LBP intensity. This may suggest that IMCL concentration could become an effective objective indicator of chronic LBP intensity.
  • 鈴木大輔, 名越智, 喜沢史弥, 高島弘幸, 舘田健児, 小助川維摩, 佐々木幹人, 岡崎俊一郎, 山下敏彦
    Hip Joint 日本股関節学会 44 (1) 309 - 313 0389-3634 2018 [Not refereed][Not invited]
     
    大腿骨被覆は股関節疾患と深い関わりがあり、近年は大腿骨寛骨臼インピンジメント(FAI)と骨形態の関わりが多く研究されている。FAIの臨床症状として、股関節の前部痛、屈曲内旋で痛み増強などが挙げられ、これらは股関節前方の骨形態と強く関連している。著者等は以前、正常股関節例のherniation pit存在率について調査し、50~60歳代で最も高かった。これらのことから、正常人の大腿骨の前方被覆は高齢になると変化するのではないかと考え、検証を行った。方法は、当院に検診目的で来院した日本人120名(男性60名、女性60名、年齢15~79歳)のCT画像を用い、3D画像ソフトで三次元構築し、「骨盤傾斜」「前方CE角」「後方CE角」を計測した。その結果、男女とも加齢に伴って骨盤が有意に後傾し、また男性のみ加齢に伴って前方CE角が有意に増大した。前方CE角の増大はFAIの発生に関係している可能性が示唆された。
  • Kazunobu Takahashi, Atsushi Sawada, Soshi Iwasaki, Naoya Yama, Hiroyuki Takashima, Maki Onodera, Masamitsu Hatakenaka, Michiaki Yamakage
    JOURNAL OF ANESTHESIA 31 (6) 915 - 917 0913-8668 2017/12 [Refereed][Not invited]
     
    We report three cases of implantation of the SureScan(A (R)) system and magnetic resonance imaging (MRI) for investigating causes of pain. Although there were metal-induced artifacts on the MR images of 2 patients, the artifacts did not affect the images of structures that needed to be assessed to make the diagnosis. The SureScan(A (R)) system enabled patients implanted with spinal cord stimulation devices to undergo MRI.
  • 高島 弘幸, 山下 敏彦
    関節外科 (株)メジカルビュー社 36 (14) 19 - 25 0286-5394 2017/10/01
  • 神保 俊介, 寺島 嘉紀, 竹林 庸雄, 黄金 勲矢, 高島 弘幸, 寺本 篤史, 渡邉 耕太, 當瀬 規嗣, 山下 敏彦
    Journal of Musculoskeletal Pain Research (一社)日本運動器疼痛学会 9 (3) S34 - S34 2186-2796 2017/10
  • Daisuke Suzuki, Satoshi Nagoya, Hiroyuki Takashima, Kenji Tateda, Toshihiko Yamashita
    CLINICAL ANATOMY 30 (6) 753 - 760 0897-3806 2017/09 [Refereed][Not invited]
     
    This study was designed specifically to determine the normal acetabular orientation and femoral head covering, and whether these are affected by age or sex. Computed tomographic images of normal Japanese hip joints were used (males 60, females 60; mean age 48.3 years, range 15-79 years). Male and female age profiles were matched. The reconstructed 3-D pelvic images were aligned in the anatomical pelvic coordinate system. The acetabular orientation angles and femoral covering angles were measured in the sagittal, coronal, and horizontal planes. In the sagittal plane, the acetabular orientation angle was operative anteversion (O-av), and the femoral covering angles were the anterior and posterior center-edge angles (ACE and PCE). In the coronal plane, they were the Sharp angle (SA) and the lateral center-edge angle (LCE). In the horizontal plane, they were anatomical anteversion (A-av) and the anterior and posterior sector angles (ASA and PSA). The O-av, SA, and A-av were smaller in the male than the female acetabulum (P<0.01). SA in both males and females was inversely correlated with age (P<0.01). Both male PCE and PSA were significantly smaller than those of females, while male ASA was larger than female ASA (P<0.05). The male acetabulum is directed further outward and downward than the female one. However, this does not indicate that the male acetabulum covers the femoral head more, because there is no significant sex difference in the LCE. Femoral coverage is more posteriorly biased in females than in males owing to pelvic inclination. Clin. Anat. 30:753-760, 2017. (c) 2017Wiley Periodicals, Inc.
  • 日本人正常寛骨臼による三次元大腿骨被覆
    鈴木 大輔, 名越 智, 高島 弘幸, 舘田 健児, 小助川 維摩, 佐々木 幹人, 岡崎 俊一郎, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 91 (8) S1545 - S1545 0021-5325 2017/08
  • ストレス撮影は必要である 踵腓靱帯に着目した新たな画像診断ツール3D MRIに加えて
    寺本 篤史, 赤塚 吉紘, 高島 弘幸, 渡邉 耕太, 山下 敏彦
    日本整形外科スポーツ医学会雑誌 (一社)日本整形外科スポーツ医学会 37 (2) 116 - 119 1340-8577 2017/05 
    足関節外側靱帯損傷は適切な保存治療によりスポーツ活動への復帰が可能であるが、重度損傷はスポーツ競技復帰まで長期間を要したり、手術が必要になることがある。重症度は踵腓靱帯(CFL)損傷の有無によって定義される。ストレス撮影は画像診断として広く行なわれているが、ストレス撮影単独での評価には限界があり、筆者らはストレス撮影と3D MRIの組み合わせによってCFLを中心とした足関節外側靱帯損傷の詳細な評価を行ってきた。その結果、手術の必要性や手術手技の選択における有用性が高まり、足関節外側靱帯損傷の治療選択に応用可能と考えられた。(著者抄録)
  • プリパルス印加型連結T1rho/T2マッピングシーケンスにおける印加時間が計測値に与える影響
    今村 塁, 高島 弘幸, 奥秋 知幸, 中西 光広, 宍戸 博紀, 赤塚 吉紘
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (82) 71 - 72 0912-0327 2017/03
  • H Otsubo, Y Akatsuka, H Takashima, T Suzuki, D Suzuki, T Kamiya, Y Ikeda, T Matsumura, T Yamashita, K Shino
    Clinical anatomy (New York, N.Y.) 30 (2) 276 - 283 0897-3806 2017/03 
    The anterior cruciate ligament (ACL) is divided into three fiber bundles (AM-M: anteromedial-medial, AM-L: anteromedial-lateral, PL: posterolateral). We attempted to depict the three bundles of the human ACL on MRI images and to obtain 3-dimensional visualization of them. Twenty-four knees of healthy volunteers (14 males, 10 females) were scanned by 3T-MRI using the fat suppression 3D coherent oscillatory state acquisition for the manipulation of imaging contrast (FS 3D-COSMIC). The scanned images were reconstructed after the isotropic voxel data, which allows the images to be reconstructed in any plane, was acquired. We conducted statistical examination on the identification rate of the three ACL bundles by 2D planes. Segmentation and 3D visualization of the fiber bundles using volume rendering were performed. The triple-bundle ACL was best depicted in the oblique axial plane. While the AM-M and AM-L bundles were clearly depicted in all cases, the PL bundle was not clearly visualized in two knees (8%). Therefore, the three ACL bundles were depicted in 22 knees (92%). The results of 3D visualization of the fiber arrangement agreed well with macroscopic findings of previous anatomical studies. 3T-MRI and the isotropic voxel data from FS 3D-COSMIC made it possible to demonstrate the identifiable depiction of three ACL bundles in nearly all cases. 3D visualization of the bundles could be a useful tool to understand the ACL fiber arrangement. Clin. Anat. 30:276-283, 2017. 2016 The Authors. Clinical Anatomy published by Wiley Periodicals, Inc. on behalf of American Association of Clinical Anatomists.
  • 寛骨臼形成不全患者と正常者の後方被覆の比較
    鈴木 大輔, 喜沢 史弥, 名越 智, 高島 弘幸, 舘田 健児, 小助川 維摩, 佐々木 幹人, 岡崎 俊一郎, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 91 (2) S533 - S533 0021-5325 2017/03
  • 赤塚 吉紘, 高島 弘幸, 今村 塁, 寺本 篤史, 鈴木 智, 岡田 葉平, 木井 雄一郎, 山下 敏彦, 渡邉 耕太
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 58 (2) 258 - 258 1343-3873 2017/03
  • TKA術前および術後における大腿筋断面積と術後の疼痛・満足度との関係
    赤塚 吉紘, 寺本 篤史, 高島 弘幸, 鈴木 智之, 岡田 葉平, 木井 雄一郎, 今村 塁, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 91 (3) S910 - S910 0021-5325 2017/03
  • Takao Murohashi, Mitsunori Yoshimoto, Tsuneo Takebayashi, Shuichi Hashimoto, Shouto Yamada, Hiroyuki Takashima, Toshihiko Yamashita
    EUROPEAN SPINE JOURNAL 26 (2) 434 - 440 0940-6719 2017/02 [Refereed][Not invited]
     
    The measurement of distal motor latency (DML) is an established method for diagnosing entrapment peripheral neuropathy. DML can also serve as an index for disease severity and prognosis. We considered that measuring DML could be useful in estimating the severity of spinal root impairment and predicting prognosis in patients with lumbar spinal stenosis (LSS). The purpose of this study was to investigate the efficacy of intraoperative direct electrical stimulation of the spinal root and the measurement of DML in LSS. In 39 patients with LSS, a total of 93 spinal roots were stimulated, and evoked electromyography was recorded at the leg muscles after decompression. DML was measured and its correlation with clinical severity, as evaluated by Zurich claudication questionnaire (ZCQ) and Short Form 36 (SF-36), was investigated. For the stimulation of the L3, L4, and L5 spinal root, the mean DML (ms) were 6.8 (+/- 1.4), 7.4 (+/- 1.3), and 6.0 (+/- 1.3) in gluteus medius, 9.3 (+/- 1.5), 9.2 (+/- 1.5), and 9.0 (+/- 1.6) in biceps femoris, 9.7 (+/- 1.0), 9.8 (+/- 1.8), and 9.4 (+/- 1.2) in vastus medialis, 16.1 (+/- 1.0), 14.7 (+/- 1.3), and 14.1 (+/- 1.5) in tibialis anterior, and 16.4 (+/- 1.4), 14.3 (+/- 1.8), and 13.9 (+/- 1.9) in gastrocnemius muscles. Statistically significant positive correlations were observed between DML and height. Preoperative symptom and function scores of ZCQ and postoperative bodily pain scores of SF-36 were significantly worse in the patients with prolonged DML. DML is thought to be useful for estimating the severity of spinal root impairment and for predicting the prognosis.
  • Ogon Izaya, Takebayashi Tsuneo, Yoshimoto Mitsunori, Takashima Hiroyuki, Morita Tomonori, Terashima Yoshinori, Yamashita Toshihiko
    PAIN RESEARCH 日本疼痛学会 32 (3) 203 - 211 0915-8588 2017 

    Sixty–five patients (45 male, 20 female; mean age: 71.7 ± 0.9) who under­went microendoscopic muscle preserving interlaminar decompression for lumbar spinal stenosis (LSS) were classified according to degenerative spondylolisthesis and pattern of neurological disorder. We estimated concerning clinical results and association between low back pain (LBP) and lumbar lordosis (LL). Postoperatively, leg symptom as well as LBP significantly improved in all groups. The improvement of LBP was significantly correlated with the increase of LL. Lumbar decompression for LSS may improve LBP and the lumbar alignment regardless of spondylolisthesis and pattern of neurological disorder.

  • Izaya Ogon, Tsuneo Takebayashi, Hiroyuki Takashima, Tomonori Morita, Mitsunori Yoshimoto, Yoshinori Terashima, Toshihiko Yamashita
    BRITISH JOURNAL OF RADIOLOGY 90 (1073) 20160753 - 20160753 0007-1285 2017 [Refereed][Not invited]
     
    Objective: To analyze intramyocellular lipids (IMCLs) and extramyocellular lipids (EMCLs) of the multifidus muscle (Mm) using MR spectroscopy in chronic low back pain (CLBP) and control groups and to identify correlations with spinopelvic alignment. Methods: 40 patients (16 males, 24 females; mean age, 62.9 +/- 1.9 years) whose visual analogue scale scores were > 30mm for CLBP were included. Furthermore, 40 control participants matched with the CLBP group subjects by sample size, gender and age (17 males, 23 females; mean age, 65.0 +/- 1.2 years) were included. We compared the body mass index, physical workload, leisure time physical activity level, spinopelvic parameters, and IMCLs and EMCLs of the Mm between the groups. We also evaluated possible correlations of spinopelvic parameters with IMCLs and EMCLs of the Mm in the groups. Results: There were no statistically significant differences in body mass index, physical workload, exercise intensity level, spinopelvic parameters and EMCLs between the groups. The IMCLs were significantly higher in the CLBP group than in the control group (p < 0.01). In the CLBP group, there was a significantly negative correlation between IMCLs and lumbar lordosis (r = 0.64, p < 0.01) and a significantly positive correlation between IMCLs and sagittal vertical axis (r = 0.43, p < 0.01). Conclusion: The measurement of IMCLs might be a characteristic finding of CLBP as well as a precursor to spinal deformity.
  • 寺本 篤史, 榊原 醸, 鈴木 智之, 山下 敏彦, 赤塚 吉紘, 高島 弘幸, 渡邉 耕太
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 58 (1) 138 - 138 1343-3873 2016/10
  • 機能的骨盤座標系から解剖学的骨盤座標系の変換で寛骨臼オリエンテーションはどう変化するのか
    鈴木 大輔, 名越 智, 高島 弘幸, 佐々木 幹人, 岡崎 俊一郎, 加谷 光規, 舘田 健児, 小助川 維摩, 大西 史師, 山下 敏彦
    Hip Joint 日本股関節学会 42 (2) 954 - 958 0389-3634 2016/08 
    日本人の正常股関節120例の骨盤CT画像を3D画像ソフトを用いて三次元構築画像に変換し、3D-CADソフトに取込み計測、座標変化して機能的骨盤肢位(FPP)と解剖学的骨盤肢位(APP)での寛骨臼オリエンテーションを計測した。また、骨盤傾斜角とFPPでの寛骨臼オリエンテーションを用いてAPPでの寛骨臼オリエンテーションの予測式を算出した。その結果、FPPでの寛骨臼オリエンテーションの計測値はAPPでの計測値に比べ、標準偏差および男女差が小さかった。これは解剖学的な寛骨臼オリエンテーションの男女差を、骨盤傾斜の調整により代償していることを示していると考えられた。また、APPの寛骨臼オリエンテーションの予測式は、骨盤傾斜角(FPPでのanterior pelvic planeと冠状面のなす角)とFPPの角度から精度よく求められ、寛骨臼形態の比較に有用であると考えられた。
  • 足関節外側靱帯損傷に対する治療戦略 ストレス撮影は必要である 踵腓靱帯に着目した新たな画像診断ツール3D MRIに加えて
    寺本 篤史, 赤塚 吉紘, 高島 弘幸, 渡邉 耕太, 山下 敏彦
    日本整形外科スポーツ医学会雑誌 (一社)日本整形外科スポーツ医学会 36 (4) 328 - 328 1340-8577 2016/08
  • Maki Onodera, Naoya Yama, Masato Hashimoto, Takaharu Shonai, Kazunori Aratani, Hiroyuki Takashima, Ken-ichi Kamo, Hiroshi Nagahama, Hiroshi Ohguro, Masamitsu Hatakenaka
    EUROPEAN RADIOLOGY 26 (8) 2640 - 2645 0938-7994 2016/08 [Refereed][Not invited]
     
    To evaluate the usefulness of the signal intensity ratio (SIR) of the optic nerve to the white matter (WM) on short tau inversion recovery (STIR) images to diagnose acute optic neuritis (AON). The 405 consecutive patients with suspected orbital diseases underwent orbital magnetic resonance imaging (MRI) using a 3-T scanner between June 2008 and August 2011. Among them, 108 optic nerves (33 AON and 75 control) were retrospectively analysed. The averaged SIR (SIRave) and maximum SIR (SIRmax) were defined as the averaged signal intensity (SI) of the optic nerve divided by that of WM, and the maximum SI of the optic nerve divided by averaged SI of WM, respectively. These values were compared between AON and control using the Mann-Whitney U test. A P < 0.05 was considered statistically significant. SIRave and SIRmax were significantly (P < 0.001) higher in the AON compared to the control. At a cut-off SIRave value of 1.119, the sensitivity, specificity and accuracy were 0.939, 0.840, and 0.870; and at a cut-off SIRmax value of 1.281, these were 1.000, 0.720 and 0.806, respectively. The SIR of the optic nerve to WM on STIR images is of value in diagnosing AON. aEuro cent We propose a method of diagnosing acute optic neuritis using 3-T MRI. aEuro cent Our method is simple and objective and requires no novel imaging techniques. aEuro cent Our method shows high diagnostic accuracy.
  • 無線型FPDの線量低減に関する検討 画像特性によるCRとの比較
    次木 嵩人, 早坂 駿, 今村 塁, 赤塚 吉紘, 佐藤 順一, 赤石 泰一, 高島 弘幸, 宍戸 博紀
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (80) 94 - 95 0912-0327 2016/04
  • 無線型FPDの線量低減に関する検討 人体ファントムによるCRとの比較
    早坂 駿, 次木 嵩人, 今村 塁, 赤塚 吉紘, 佐藤 順一, 赤石 泰一, 高島 弘幸, 宍戸 博紀
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (80) 96 - 97 0912-0327 2016/04
  • balanced SSFPシーケンスを用いた足関節肢位による踵腓靱帯の評価
    赤塚 吉紘, 寺本 篤史, 高島 弘幸, 宍戸 博紀, 今村 塁, 柳田 美香
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (80) 44 - 45 0912-0327 2016/04
  • 寺本 篤史, 榊原 醸, 鈴木 智之, 山下 敏彦, 赤塚 吉紘, 高島 弘幸, 渡邉 耕太
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 57 (2) 333 - 333 1343-3873 2016/04
  • 久保田 ちひろ, 鈴木 智之, 岡田 葉平, 木井 雄一郎, 寺本 篤史, 渡邉 耕太, 山下 敏彦, 高島 弘幸, 今村 塁, 大坪 英則, 小笠原 一洋, 杉 憲
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 57 (2) 395 - 395 1343-3873 2016/04
  • 寺本 篤史, 赤塚 吉紘, 高島 弘幸, 鈴木 智之, 渡邉 耕太, 山下 敏彦
    別冊整形外科 (株)南江堂 (69) 207 - 210 0287-1645 2016/04 
    3D-MRIを用いて正常ボランティア10例の足関節外側靱帯の形態学的計測を行なった。また、あわせて新鮮足関節外側靱帯損傷4例における損傷部位と治療過程の評価を行った。その結果、1)3D-MRIを用いることで正常ボランティアの前距腓靱帯(ATFL)と踵腓靱帯(CFL)は全長にわたって明瞭に描出され、ATFLの幅は平均4.0mm、CFLの幅は平均4.8mmであった。2)靱帯損傷患者のATFLは受傷直後に高信号変化を伴う靱帯途絶所見があり、経時的に高信号を伴うびまん性膨化を示した。ATFLの幅は受傷直後平均5.8mm、4週後は平均7.1mm、8週後は平均8mmであった。3)CFLは1例のみ受傷直後に高信号変化を伴う靱帯途絶所見があり、経時的に高信号を伴うびまん性膨化がみられた。CFLの幅は受傷直後7.2mm、4週後10.9mm、8週後11.5mmであった。尚、CFLに受傷直後の信号変化がなかった3例では、信号や幅は経時的に変化しなかった。以上より、3D-MRIは新鮮足関節外側靱帯損傷の診断と重症度判定、治療過程の評価に有用であることが示唆された。
  • 人工膝関節置換術後の疼痛と術前大腿部筋断面積の関係
    赤塚 吉紘, 寺本 篤史, 高島 弘幸, 鈴木 智之, 岡田 葉平, 木井 雄一郎, 今村 塁, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 90 (3) S782 - S782 0021-5325 2016/03
  • 足関節外側靱帯損傷の3D MRI所見と治療選択
    寺本 篤史, 赤塚 吉紘, 高島 弘幸, 榊原 醸, 鈴木 智之, 渡邉 耕太, 山下 敏彦
    日本整形外科学会雑誌 (公社)日本整形外科学会 90 (3) S945 - S945 0021-5325 2016/03
  • Ikeda Shu, Shibukawa Shuhei, Takashima Hiroyuki
    Japanese Journal of Radiological Technology 公益社団法人 日本放射線技術学会 72 (8) 708 - 710 0369-4305 2016 [Not refereed]
  • Hiroyuki Takashima, Tsuneo Takebayashi, Izaya Ogon, Mitsunori Yoshimoto, Yoshinori Terashima, Rui Imamura, Toshihiko Yamashita
    BRITISH JOURNAL OF RADIOLOGY 89 (1064) 20160136 - 20160136 0007-1285 2016 [Refereed][Not invited]
     
    Objective: To analyze the intramyocellular lipids (IMCL) and extramyocellular lipids (EMCL) in the psoas muscle (Pm) and multifidus muscle (Mm) using MR spectroscopy (MRS) in patients with chronic low back pain (CLBP) and asymptomatic volunteers. Methods: This prospective study had institutional review board approval, and written informed consent was obtained from all individual participants. 20 patients with CLBP (mean age, 49.8 +/- 12.5 years; age range, 28-66 years) with low back pain (LBP) duration of >= 3 months and asymptomatic volunteers (mean age, 44.0 +/- 12.8 years; age range, 28-65 years) underwent MRS for the quantification of IMCL and EMCL of the right Pm and Mm in a volume of interest at the intervertebral level of L4 through L5. We compared patients with CLBP and asymptomatic volunteers for age and body mass index (BMI), IMCL and EMCL of Pm and Mm. The Mann-Whitney U-test was used for significant difference testing, with p-value <0.05 indicating statistical significance. Results: No statistically significant differences were observed in the age and BMI of patients with CLBP and asymptomatic volunteers. There was no statistically significant difference in the EMCL and IMCL in Pm between the two groups. EMCL in Mm was not statistically significantly different; the IMCL of patients with CLBP was significantly higher than that of asymptomatic volunteers (p < 0.05). Conclusion: MRS demonstrates that IMCL in the Mm of patients with CLBP is significantly higher than that of asymptomatic volunteers. The increase of IMCL in the Mm may be a characteristic finding in CLBP. Advances in knowledge: We investigated the detail of the fat content in the paraspinal muscles in patients CLBP and asymptomatic volunteers. The increase of fat content in the Mm of patients with LBP on previous studies was demonstrated to be the increase of IMCL.
  • Nagahama H, Shonai T, Takashima H, Hirano T, Suzuki J, Sakurai Y
    Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics 36 (2) 103 - 109 1345-5354 2016 [Refereed][Not invited]
     
    The principle and clinical application of measurement of cerebral blood perfusion (CBP) using MRI are described. Purposes of measuring CBP using MRI are wide-ranging. Generally, it is used to diagnose cerebro-vascular disorders or brain tumors. There are two types of measuring methods. One is dynamic susceptibility contrast (DSC) method using a contrast agent as a tracer. Another is an arterial spin labeling (ASL) method using protons in arterial blood as an endogenous tracer, instead of bio-exogenous tracer. Basic theory of ASL method was published in the 1990s, recently, its clinical application has been spreading rapidly by the technological innovations. ASL method is attractive as a way to measure CBP because of its non-invasiveness (no radiation-exposure, not need intravenous injection or blood sampling), and the imaging time is about 5 minutes, thereby the measurement can be repeated. The analysis of DSC method has not been standardized, though various valuable parameters are provided. And the prerequisite of DSC method is uncertain in vivo. On the other hand, the result of ASL is affected by the post labeling delay, and limited to the arterial information.
  • Hiroyuki Takashima, Tsuneo Takebayashi, Hiroki Shishido, Mitsunori Yoshimoto, Rui Imamura, Yoshihiro Akatsuka, Yoshinori Terashima, Hiroyoshi Fujiwara, Masateru Nagae, Toshikazu Kubo, Toshihiko Yamashita
    Asian Spine Journal 10 (1) 59 - 64 1976-7846 2016 [Refereed][Not invited]
     
    Study Design: Prospective study based on magnetic resonance (MR) imaging of the lumbar spinal root of the intervertebral foramen. Purpose: This study was to compare MR three-dimensional (3D) sequences for the evaluation of the lumbar spinal root of the intervertebral foramen. Overview of Literature: The diagnosis of spinal disorders by MR imaging is commonly performed using two-dimensional T1-and T2-weighted images, whereas 3D MR images can be used for acquiring further detailed data using thin slices with multi-planar reconstruction. Methods: On twenty healthy volunteers, we investigated the contrast-to-noise ratio (CNR) of the lumbar spinal root of the intervertebral foramen with a 3D balanced sequence. The sequences used were the fast imaging employing steady state acquisition and the coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC). COSMIC can be used with or without fat suppression (FS). We compared these sequence to determine the optimized visualization sequence for the lumbar spinal root of the intervertebral foramen. Results: For the CNR between the nerve root and the peripheral tissue, these were no significant differences between the sequences at the entry of foramen. There was a significant difference and the highest CNR was seen with COSMIC-FS for the intra- and extraforamen. Conclusions: In this study, the findings suggest that the COSMIC-FS sequences should be used for the internal or external foramen for spinal root disorders.
  • 高島 弘幸, 竹林 庸雄, 吉本 三徳, 寺島 嘉紀, 井田 和功, 今村 塁, 赤塚 吉紘, 山下 敏彦
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 57 (1) 17 - 22 1343-3873 2015/12 
    腰椎多椎間病変では、理学所見や神経根ブロックの効果により責任高位を同定しているが、客観性に乏しい側面を有する。神経根性疼痛の責任神経根では、神経根の炎症および浮腫性変化が起きる。これらは、MRI拡散強調像(diffusion weighted image:DWI)で評価が可能であると考えられ、障害神経レベルの拡散係数(apparent diffusion coefficient:ADC)が上昇することが報告されている。本研究の目的は、DWIを用いて、腰椎椎間板ヘルニアにおける障害レベルのDRGのADCを分析することである。単椎間の腰椎椎間板ヘルニア21例を解析した。障害神経根レベルのADCは患側で上昇が認められたのは12例、低下したのは9例であり、一定の傾向は認められなかった。ADCの患健側比と罹病期間、VASとに相関は認められなかった。一方、術前後のVASの改善率との関係では、患側のADCが低下した症例はVASの術後改善率が低い傾向であった。DWIのADCのみによる障害神経の判別は困難であると考えられるが、神経の可逆性に関連している可能性がある。(著者抄録)
  • 無線型FPDの線量低減に関する検討 画像特性によるCRとの比較
    次木 嵩人, 佐藤 順一, 高島 弘幸, 宍戸 博紀, 今村 塁, 赤塚 吉紘, 赤石 泰一
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (79) 83 - 83 0912-0327 2015/10
  • 無線型FPDの線量低減に関する検討 人体ファントムによるCRとの比較
    早坂 駿, 佐藤 順一, 高島 弘幸, 宍戸 博紀, 今村 塁, 赤塚 吉紘, 赤石 泰一
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (79) 83 - 83 0912-0327 2015/10
  • 3D FIESTA-Cシーケンスを用いた足関節肢位による踵腓靱帯の評価
    赤塚 吉紘, 高島 弘幸, 宍戸 博記, 今村 塁, 柳田 美香, 寺本 篤史
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (79) 86 - 86 0912-0327 2015/10
  • Tomonori Morita, Tsuneo Takebayashi, Hiroyuki Takashima, Mitsunori Yoshimoto, Kazunori Ida, Katsumasa Tanimoto, Hirofumi Ohnishi, Hiroyoshi Fujiwara, Masateru Nagae, Toshihiko Yamashita
    JOURNAL OF NEUROSURGERY-SPINE 23 (2) 254 - 258 1547-5654 2015/08 [Refereed][Not invited]
     
    OBJECT Safe and effective insertion of occipital bone screws requires morphological analysis of the occipital bone, which is poorly documented in the literature. The authors of this study present morphological data for determining the area of screw placement for optimal internal fixation. METHODS The subjects of this institutional review board approved retrospective study were 105 individuals without head and neck disease who underwent CT imaging at the authors' hospital. There were 55 males and 50 females, with a mean age of 57.1 years (range 20-91 years). Measurements using CT were taken according to a matrix of 55 points following a grid with 1-cm spacing based on the external occipital protuberance (EOP). RESULTS The maximum thickness of the occipital bone was at the level of the EOP at 16.4 mm. Areas with thicknesses > 8 mm were more frequent at the EOP and up to 2 cm in all directions, as well as up to 1 cm in all directions at a height of 1 cm inferiorly, and up to 3 cm from the EOP inferiorly. The male group tended to have a thicker occipital bone than the female group, and the differences were significant around the EOP. The ratio of the trabecular bone to the occipital bone thickness was > 30% in the central region. At positions more than 2 cm laterally, the ratio was < 15%, and the ratio gradually decreased further laterally. CONCLUSIONS Screws that are 8 mm long can be placed in the area extending 2 cm laterally from the EOP at the level of the superior nuchal line and approximately 3 cm inferior to the center. These results suggest that it may be possible to effectively insert a screw over a wider area than the conventional reference range.
  • Hiroyuki Takashima, Hiroki Shishido, Rui Imamura, Yoshihiro Akatsuka, Keigo Taniguchi, Mitsuhiro Nakanishi, Junpei Suzuki, Hiroshi Nagahama, Yuki Sakurai, Motomichi Sakata
    Radiological Physics and Technology 8 (2) 209 - 214 1865-0341 2015/07/23 [Refereed][Not invited]
     
    Muscle proton magnetic resonance spectroscopy (MRS) has been developed for non-invasive measurement of intramyocellular lipid (IMCL) levels. The majority of previous studies measuring IMCL with MRS have been performed on the calf muscle. The appearance of muscle MRS is influenced by bulk magnetic susceptibility and residual dipolar couplings, which depend on the angle between the muscle fibers and the main magnetic field. Our objective in this study was to evaluate the effect of ankle flexion and of the pennation angle on IMCL quantification in the calf muscle using proton MRS. The subjects comprised ten healthy male volunteers. In proton MRS, the ankle flexion angle was changed, and the pennation angle was measured from the tibialis anterior (TA) and the medial gastrocnemius (MG), respectively. We considered the relationship between the quantification of IMCL with 1H MRS and the pennation angle by ankle flexion angle. The pennation angle of the TA and MG changed with the ankle flexion angle. The IMCL on the TA decreased significantly with plantar flexion (p <  0.05). However, the IMCL on the MG demonstrated no significant difference. The MR spectrum and IMCL quantitation changed with the pennation angle. Therefore, when spectra of individual subjects in longitudinal studies or between subjects are compared in cross-sectional studies, the foot position or calf muscle orientation must be considered.
  • 赤塚 吉紘, 高島 弘幸, 宍戸 博紀, 今村 塁, 寺本 篤史, 渡邉 耕太, 山下 敏彦
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 56 (2) 305 - 306 1343-3873 2015/07
  • 高島 弘幸
    JART = 日本診療放射線技師会誌 日本診療放射線技師会 62 (6) 551 - 553 2187-2538 2015/06
  • Izaya Ogon, Tsuneo Takebayashi, Hiroyuki Takashima, Katsumasa Tanimoto, Kazunori Ida, Mitsunori Yoshimoto, Hiroyoshi Fujiwara, Toshikazu Kubo, Toshihiko Yamashita
    JOURNAL OF ORTHOPAEDIC SCIENCE 20 (2) 295 - 301 0949-2658 2015/03 [Refereed][Not invited]
     
    Magnetic resonance imaging (MRI) T2 mapping utilizes the T2 values for quantification of moisture content and collagen sequence breakdown. Recently, attempts at quantification of lumbar disc degeneration through MRI T2 mapping have been reported. We conducted an analysis of the relationship between T2 values of degenerated intervertebral discs (IVD) and chronic low back pain (CLBP). The subjects who had CLBP comprised 28 patients (15 male, 13 female; mean age 48.9 +/- A 9.6 years; range 22-60 years). All subjects underwent MRI and filled out the low back pain visual analog scale (VAS) and Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ). The disc was divided into the anterior annulus fibrosus (AF), the nucleus pulposus (NP), and the posterior AF, and each T2 value was measured. This study involved 25 asymptomatic control participants matched with the CLBP group subjects for gender and age (13 male, 12 female; mean age 43.8 +/- A 14.5 years; range 23-60 years). These subjects had no low back pain, and constituted the control group. T2 values for IVD tended to be lower in the CLBP group than in the control group, and these values were significantly different within the posterior AF. The correlation coefficients between the VAS scores and T2 values of anterior AF, NP and posterior AF were r = 0.30, -0.15 and -0.50. The correlation coefficient between the JOABPEQ scores (low back pain) and T2 values of anterior AF, NP and posterior AF were r = -0.0041, 0.11 and 0.42. Similarly, the JOABPEQ scores (lumbar function) were r = -0.22, -0.12 and 0.57. The results indicated a correlation between posterior AF degeneration and CLBP. This study suggests that MRI T2 mapping could be used as a quantitative method for diagnosing discogenic pain.
  • Takashima Hiroyuki, Takebayashi Tsuneo, Ogon Izaya, Yoshimoto Mitsunori, Terashima Yoshinori, Imamura Rui, Kano Masanobu, Nakanishi Mitsuhiro, Nagahama Hiroshi, Yamashita Toshihiko
    PAIN RESEARCH 30 (4) 230 - 237 0915-8588 2015 [Refereed][Not invited]
     
    Objective. To analyze the intramyocellular lipids (IMCL) and extramyo cellular lipids (EMCL) in the multifidus muscle (Mm) using magnetic resonance spectroscopy (MRS) with chronic low back pain (LBP) patients and to identify possible correlation with LBP, obesity and these metabolism.Materials and Methods. This prospective study had institutional review board approval, and written informed consent was obtained from all study participants. Forty patients (24 women, 16men; mean age, 64.7 years +/- 12.7; age range, 22-85 years) with LBP duration of >= 3 months, who underwent MRS to quantify IMCL and EMCL of right Mm in a volume interest at the intervertebral level of L4 through L5. We analyzed body mass index (BMI) as an indicator of obesity, and visual analogue score (VAS) as LBP intensity. The associations were analyzed using Spearman's correlation coefficient.Results. The BMI showed correlation with EMCL (r=0.436, p<0.01), but no correlation with IMCL. The VAS showed correlation with IMCL (r=0.657, p<0.01) but no correlation with EMCL.Conclusion. The present study showed a relationship between IMCL in the Mm and chronic LBP. The analysis of Mm with MRS is expected to become an effective objective indicator of chronic LBP.
  • Shishido H, Takashima H, Takebayashi T, Akatsuka Y, Imamura R, Nagahama H, Shirase R
    Nihon Hoshasen Gijutsu Gakkai zasshi 7 70 (7) 670 - 675 0369-4305 2014/07 [Refereed][Not invited]
     
    Identification of the compression factor in cervical disc herniation and cervical spondylotic radioculopathy is often problematic when using two-dimensional magnetic resonance imaging (MRI). This prompted us to compare and examined three-dimensional sequences, coherent oscillatory state acquisition for the manipulation of image contrast (COSMIC), fast imaging employing steady state acquisition (FIESTA) and T2 star weighted MR angiography (SWAN) with 3.0-Tesla (T) MRI to visualize the foramen intervertebral nerve root for the cervical spine. Fat-suppressed COSMIC (FS-COSMIC) sequence gave the highest signal intensity ratio (1.85 ± 0.06) of the nerve root and vertebral arch. A significant difference in signal intensity ratio of the nerve root was found between FS-COSMIC and FIESTA sequences. No significant difference was found between the FS-COSMIC and FIESTA sequences in the cerebrospinal fluid and the spinal cord. The FS-COSMIC sequence proved to be the most suitable sequence for intra and extra dura matter.
  • Hiroyuki Takashima, Tsuneo Takebayashi, Mitsunori Yoshimoto, Yoshinori Terashima, Kazunori Ida, Hiroki Shishido, Rui Imamura, Yoshihiro Akatsuka, Ryuji Shirase, Hiroyoshi Fujiwara, Toshikazu Kubo, Toshihiko Yamashita
    MAGNETIC RESONANCE IN MEDICAL SCIENCES 13 (4) 261 - 266 1347-3182 2014 [Refereed][Not invited]
     
    Purpose: We measured T-2 relaxation time of the intervertebral discs (IVD) and facet joints (FJ) in patients with degenerative spondylolisthesis (DS) and no spondylolisthesis (NS) and investigated the characteristics of these parts in DS. Methods: In 40 patients with DS and 40 patients with NS, we measured T-2 relaxation time of the IVD and FJ and compared them between groups. In the group with DS, we also examined the relationship between the degree of slippage using Meyerding grade and T-2 relaxation of each part in the IVD and FJ. Results: T-2 relaxation time of the IVD tended to be lower in the DS than NS group and differed significantly (P < 0.01) within the anterior annulus fibrosus. T-2 relaxation time in the FJ was significantly higher in the DS than NS group. T-2 relaxation time in the FJ was significantly higher for those assessed Meyerding Grade II than Grade I, although we observed no significant differences in T-2 relaxation time in any area of the IVD. Conclusion: T-2 relaxation time decreased in the anterior annulus fibrosus of the IVD and increased in the FJ in patients with DS, suggesting an association of IVD and FJ degeneration with the development of lumbar DS.
  • Atsushi Teramoto, Kota Watanabe, Hiroyuki Takashima, Toshihiko Yamashita
    Foot and Ankle Specialist 7 (3) 181 - 183 1938-7636 2014 [Refereed][Not invited]
     
    The purpose of this study was to perform stress imaging of hindfoot inversion and eversion using tomosynthesis and to assess the subtalar joint range of motion (ROM) of healthy subjects. The subjects were 15 healthy volunteers with a mean age of 29.1 years. Coronal tomosynthesis stress imaging of the subtalar joint was performed in a total of 30 left and right ankles. A Telos stress device was used for the stress load, and the load was 150 N for both inversion and eversion. Tomographic images in which the posterior talocalcaneal joint could be confirmed on the neutral position images were used in measurements. The angle of the intersection formed by a line through the lateral articular facet of the posterior talocalcaneal joint and a line through the surface of the trochlea of the talus was measured. The mean change in the angle of the calcaneus with respect to the talus was 10.3 ± 4.8° with inversion stress and 5.0 ± 3.8° with eversion stress from the neutral position. The result was a clearer depiction of the subtalar joint, and inversion and eversion ROM of the subtalar joint was shown to be about 15° in healthy subjects.Levels of Evidence: Diagnostic, Level IV © 2014 The Author(s).
  • Takashima H
    Nihon Hoshasen Gijutsu Gakkai zasshi 11 69 (11) 1292 - 1296 0369-4305 2013/11 [Refereed][Not invited]
  • 寺本 篤史, 渡邉 耕太, 小林 拓馬, 山下 敏彦, 高島 弘幸, 赤塚 吉紘
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 55 (1) 105 - 105 1343-3873 2013/08
  • Hiroyuki Takashima, Tsuneo Takebayashi, Mitsunori Yoshimoto, Yoshinori Terashima, Kazunori Ida, Toshihiko Yamashita
    SPINE 38 (16) E998 - E1002 0362-2436 2013/07 [Refereed][Not invited]
     
    Study Design. Prospective study based on magnetic resonance imaging for lumbar disc herniation. Objective. In this study, we captured diffusion-weighted imaging (DWI) of dorsal root ganglion (DRG) of the affected nerve root in lumbar disc herniation and examined the relationship between apparent diffusion coeffi cient (ADC) and clinical symptoms to evaluate the effi cacy of DWI in the diagnosis of lumbar spinal disorders. Summary of Background Data. DWI captures diffusion of water molecules in intracellular or extracellular fl uid, allowing visualization of edematous changes, and is therefore used in diagnosis of hyper-acute cerebral infarction. In addition, it is possible to quantify the degree of diffusion using ADC calculated from the DWI data. Meanwhile in lumbar disc herniation, edematous changes occur in DRG of affected nerve root. If DWI enables visualization of these edematous changes, it will be possible to diagnose objectively the affected level. Methods. The subjects were 30 patients who underwent surgery of unilateral radiculopathy and a single level lumbar disc herniation. We analyzed the relationship between morbidity duration, visual analogue scale (VAS) score of leg symptoms, and ADC. In addition, we investigated any correlation between VAS recovery ratio (i.e., VAS preoperative -VAS postoperative)/VAS preoperative x 100) with ADC. Results. When compared with the contralateral side, ADC of the affected DRG was observed to increase in 18 and decrease in 12 subjects, and thus no defi nite trend was observed. The relationship between morbidity duration, VAS score, and ADC had no observed correlation. A positive correlation between ADC and VAS recovery ratio was statistically observed (P < 0.01, leg pain: r = 0.707, leg numbness: r = 0.738). Conclusion. This study showed that patients with decreased ADC tended to show poor improvement of leg symptoms, which may suggest the possibility that ADC of DRG is related to neuronal plasticity.
  • Nozaki Shuhei, Taniguchi Keigo, Takashima Hiroyuki, Watanabe Kota, Hatakenaka Masamitsu, Katayose Masaki
    MEDICINE AND SCIENCE IN SPORTS AND EXERCISE 45 (5) 55 - 56 0195-9131 2013/05 [Refereed][Not invited]
  • Shirase R, Sakurai Y, Nagahama H, Harada K, Takashima H, Nakanishi M, Harada K, Shishido H, Imamura R, Sakata M, Hatakenaka M
    Nihon Hoshasen Gijutsu Gakkai zasshi 5 69 (5) 529 - 534 0369-4305 2013/05 [Refereed][Not invited]
     
    The objective of our study was to optimize magnetic resonance image (MRI) sequences and parameters using operative assisted images (three-dimensional images) for radical prostatectomy at 3 tesla (T) MRI. Five healthy volunteers underwent MRI on the 3.0 T scanner. Various sequences and parameters [Cube (TE/TR = 18, 50, 90 ms/2000 ms), FIESTA (TE/TR/FA = 2.4 ms/5 ms/40 degrees, 90 degrees), fSPGR (TE/TR/FA = 2.3 ms/11.2 ms/20 degrees), slice thickness = 1.2 mm, matrix = 192 x 160] were respectively compared. Several structures of the pelvis (the central zones and transition zones of the prostate, the peripheral zones of the prostate, seminal vesicles, rectum wall, bladder, muscle and fat) were determined. The signal intensities of these structures were measured on reformatted axial images and compared against several structures of the pelvis. Correlation with various sequences and parameters was based on the signal-to-noise ratio (SNR), the contrast ratio (CR) and the presence of artifacts. Student's t-test was used for statistical analysis. With Cube (TE/TR = 50 ms/2000 ms), the average value of visual evaluation with artifacts was high, and SNR and CR were higher than for other sequence and parameters. Optimized MRI sequences and parameters were Cube (TE/TR = 50 ms/2000 ms) which provides improved SNR and CR and the presence of artifacts with operative assisted images for radical prostatectomy. These operative assisted images obtained from Cube (TE/TR = 50 ms/2000 ms) are likely to be useful for surgery.
  • 寺本 篤史, 小路 弘晃, 渡邉 耕太, 佐藤 直一, 木井 雄一郎, 工藤 未来, 大坪 英則, 山下 敏彦, 高島 弘幸
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 54 (2) 322 - 322 1343-3873 2013/03
  • 寺本 篤史, 渡邉 耕太, 木井 雄一郎, 小林 拓馬, 山下 敏彦, 高島 弘幸
    北海道整形災害外科学会雑誌 北海道整形災害外科学会 54 (2) 329 - 329 1343-3873 2013/03
  • Hiroyuki Takashima, Tsuneo Takebayashi, Mitsunori Yoshimoto, Yoshinori Terashima, Hajime Tsuda, Kazunori Ida, Toshihiko Yamashita
    SKELETAL RADIOLOGY 41 (2) 163 - 167 0364-2348 2012/02 [Refereed][Not invited]
     
    Magnetic resonance T2 mapping allows for the quantification of water and proteoglycan content within tissues and can be used to detect early cartilage abnormalities as well as to track the response to therapy. The goal of the present study was to use T2 mapping to quantify intervertebral disk water content according to the Pfirrmann classification. This study involved 60 subjects who underwent lumbar magnetic resonance imaging (a total of 300 lumbar disks). The degree of disk degeneration was assessed in the midsagittal section on T2-weighted images according to the Pfirrmann classification (grades I to V). Receiver operating characteristic (ROC) analysis was performed among grades to determine the cut-off values. In the nucleus pulposus, T2 values tended to decrease with increasing grade, and there was a significant difference in T2 values between each grade from grades I to IV. However, there was no significant difference in T2 values in the anterior or posterior annulus fibrosus. T2 values according to disk degeneration level classification were as follows: grade I (> 116.8 ms), grade II (92.7-116.7 ms), grade III (72.1-92.6 ms), grade IV (< 72.0 ms). T2 values decreased with increasing Pfirrmann classification grade in the nucleus pulposus, likely reflecting a decrease in proteoglycan and water content. Thus, T2 value-based measurements of intervertebral disk water content may be useful for future clinical research on degenerative disk diseases.
  • 高島 弘幸
    整形外科 南江堂 60 (3) 254 - 254 0030-5901 2009/03/01
  • Synergy Spine Coilを用いた下肢造影MR-Angiography
    高島 弘幸, 渡辺 直輝
    北海道放射線技術雑誌 (公社)日本放射線技術学会-北海道支部 (62) 73 - 78 0912-0327 2002/06 
    National Electrical Manufacturers Association(NEMA)standardの特殊RFコイルの特性評価法に準じファントム実験を行い,感度領域を測定した.その結果,wholebody coilと比較した場合のsynergy spine coilの撮像有効範囲を求めることができた.有効な感度領域はX軸方向300mm,Y軸方向120mm,Z軸方向は使用element数を変化させることにより,必要とされる任意の広さに設定できた.以上より,下肢,特に下腿部造影MR-angiographyでは,多くの症例においてポジショニングが可能であり,whole body coilを用いるよりもsignal-to-Noise Ratio(SNR)が向上するためよりよい画像を得ることができ,synergy spine coilの使用は有効であると思われた

MISC

Research Grants & Projects

  • 日本学術振興会:科学研究費助成事業 基盤研究(C)
    Date (from‐to) : 2023/04 -2028/03 
    Author : 高島 弘幸
  • Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists
    Date (from‐to) : 2018/04 -2021/03 
    Author : Takashima Hiroyuki
     
    Previous studies have reported the relationship between low back pain (LBP) and fat degeneration or atrophy in the paraspinal muscles. We applied MR spectroscopy to the investigation of LBP. We compared intra-myocellular lipid (IMCL) and extra-myocellular lipid (EMCL) in paraspinal muscles between asymptomatic volunteers and LBP patients and reported that IMCL in Mm of patients with LBP was higher than that in Mm of asymptomatic volunteers. However, there were no fundamental studies investigating relationship between IMCL and pain. To investigate the relationship between pain and IMCL, we considered that it was essential to develop animal model indicating increasing IMCL. This study results that there was significant decrease of IMCL using tail-suspended combined with hind-limbs-casted rat model. Tail-suspended combined with casted rat model enables to use as rat model showing decrease of IMCL.
  • Japan Society for the Promotion of Science:Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
    Date (from‐to) : 2010 -2013 
    Author : HATAKENAKA Masamitsu, TAKASHIMA Hiroyuki, TMATSUO Yoshio, OHYAGI Yasumasa, SAKAE Nobutaka, NISHIKAWA Kei, HONDA Hiroshi, SUNAMI Shunya, KAMITANI Takeshi
     
    The fractional anisotropy of myopathy lesion was decreased by 38%, and lambuda 1, 2, and 3 were increased by 59%, 69%, and 79% compared to normal muscles, respectively. These results suggest that parameters related to diffusion tensor imaging are useful for detecting myopathy lesions. However, when comparing absolute parameter values and setting thresholds, some attentions are needed regarding the MR system characteristics.


Copyright © MEDIA FUSION Co.,Ltd. All rights reserved.