Lifetime attributable risk of radiation-induced secondary cancer from proton beam therapy compared with that of intensity-modulated X-ray therapy in randomly sampled pediatric cancer patients
Masaya Tamura, Hideyuki Sakurai, Masashi Mizumoto, Satoshi Kamizawa, Shigeyuki Murayama, Haruo Yamashita, Seishin Takao, Ryusuke Suzuki, Hiroki Shirato, Yoichi M. Ito
JOURNAL OF RADIATION RESEARCH, 58, 3, 363, 371, OXFORD UNIV PRESS, May 2017, [Peer-reviewed]
English, Scientific journal, To investigate the amount that radiation-induced secondary cancer would be reduced by using proton beam therapy (PBT) in place of intensity-modulated X-ray therapy (IMXT) in pediatric patients, we analyzed lifetime attributable risk (LAR) as an in silico surrogate marker of the secondary cancer after these treatments. From 242 pediatric patients with cancers who were treated with PBT, 26 patients were selected by random sampling after stratification into four categories: (i) brain, head and neck, (ii) thoracic, (iii) abdominal, and (iv) whole craniospinal (WCNS) irradiation. IMXT was replanned using the same computed tomography and region of interest. Using the dose-volume histograms (DVHs) of PBT and IMXT, the LARs of Schneider et al. were calculated for the same patient. All the published dose-response models were tested for the organs at risk. Calculation of the LARs of PBT and IMXT based on the DVHs was feasible for all patients. The means +/- standard deviations of the cumulative LAR difference between PBT and IMXT for the four categories were (i) 1.02 +/- 0.52% (n = 7, P = 0.0021), (ii) 23.3 +/- 17.2% (n = 8, P = 0.0065), (iii) 16.6 +/- 19.9% (n = 8, P = 0.0497) and (iv) 50.0 +/- 21.1% (n = 3, P = 0.0274), respectively (one tailed t-test). The numbers needed to treat (NNT) were (i) 98.0, (ii) 4.3, (iii) 6.0 and (iv) 2.0 for WCNS, respectively. In pediatric patients who had undergone PBT, the LAR of PBT was significantly lower than the LAR of IMXT estimated by in silico modeling. Although a validation study is required, it is suggested that the LAR would be useful as an in silico surrogate marker of secondary cancer induced by different radiotherapy techniques.

Accuracy Verification of Respiratory-gated Radiotherapy that Combines the Respiration-Monitoring Device and Respiratory-gated System.
Shintani N, Monzen H, Tamura M, Asai Y, Shimomura K, Matsumoto K, Okumura M, Nishimura Y
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics, 35, 4, 282, 291, Japan Society of Medical Physics, 2016, [Peer-reviewed]
Japanese, The purpose of this study is to evaluate the mechanical accuracy of a respiratory-gated radiation system that combines the Linear Indicator-equipped Abches respiration-monitoring device and the Varian Real-time Position Management system (LI-RPM system). This combined configuration, implemented for the first time in Japan, was compared with the stand-alone Varian RPM system (RPM system). The delay times, dose profiles, and output waveforms of the LI-RPM and RPM systems were evaluated using a self-produced dynamic phantom. The delay times for the LI-RPM and RPM systems were both 0.1 s for 4 s and 8 s test periods. The corresponding output waveform correlation factors (R²) for the 4 s and 8 s test periods were 0.9981 and 0.9975, respectively. No difference was observed in the dose profiles of the two systems. Thus, the present results indicate that the proposed LI-RPM combined respiratory-gated radiation system has similar properties to the RPM system. However, it offers several advantages in terms of its versatility, including its alignment assistance capabilities for non-coplanar treatments.

[Neutron Dosimetry System Using CR-39 for High-energy X-ray Radiation Therapy].
Yabuta K, Monzen H, Tamura M, Tsuruta T, Itou T, Nohtomi A, Nishimura Y
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics, 34, 3, 139, 148, 2014, [Peer-reviewed]

A prospective clinical trial of tumor hypoxia imaging with 18f-fluoromisonidazole positron emission tomography and computed tomography (f-miso pet/ct) before and during radiation therapy
Izumi Tachibana, Yasumasa Nishimura, Toru Shibata, Shuichi Kanamori, Kiyoshi Nakamatsu, Ryuta Koike, Tatsuyuki Nishikawa, Kazuki Ishikawa, Masaya Tamura, Makoto Hosono
Journal of Radiation Research, 54, 6, 1078, 1084, Nov. 2013, [Peer-reviewed]
English, To visualize intratumoral hypoxic areas and their reoxygenation before and during fractionated radiation therapy (RT), 18F-fluoromisonidazole positron emission tomography and computed tomography (F-MISOPET/CT) were performed. A total of 10 patients, consisting of four with head and neck cancers, four with gastrointestinal cancers, one with lung cancer, and one with uterine cancer, were included. F-MISO PET/CT was performed twice, before RT and during fractionated RT of approximately 20 Gy/10 fractions, for eight of the 10 patients. F-MISO maximum standardized uptake values (SUVmax) of normal muscles and tumors were measured. The tumor-to-muscle (T/M) ratios of F-MISO SUVmax were also calculated. Mean SUVmax ± standard deviation (SD) of normal muscles was 1.25 ± 0.17, and SUVmax above the mean + 2 SD (=1.60 SUV) was regarded as a hypoxic area. Nine of the 10 tumors had an F-MISO SUVmax of =1.60. All eight tumors examined twice showed a decrease in the SUVmax, T/M ratio, or percentage of hypoxic volume (F-MISO =1.60) at approximately 20 Gy, indicating reoxygenation. In conclusion, accumulation of F-MISO of =1.60 SUV was regarded as an intratumoral hypoxic area in our F-MISO PET/CT system. Most human tumors (90%) in this small series had hypoxic areas before RT, although hypoxic volume was minimal (0.0-0.3%) for four of the 10 tumors. In addition, reoxygenation was observed in most tumors at two weeks of fractionated RT. © The Author 2013. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Therapeutic Radiology and Oncology.

Dosimetric properties and clinical application of an a-Si EPID for dynamic IMRT quality assurance
Kenji Matsumoto, Masahiko Okumura, Yoshiyuki Asai, Kouhei Shimomura, Masaya Tamura, Yasumasa Nishimura
Radiological Physics and Technology, 6, 1, 210, 218, Jan. 2013, [Peer-reviewed]
English, Scientific journal, Dosimetric properties of an amorphous silicon electronic portal imaging device (EPID) for verification of intensity-modulated radiation therapy (IMRT) were investigated as a replacement for conventional verification tools. The portal dosimetry system of Varian's EPID (aS1000) has an integrated image mode for portal dosimetry (PD). The source-to-imager distance was 105 cm, and there were no extra buildup materials on the surface of the EPID in this study. Several dosimetric properties were examined. For clinical dosimetry, the dose distributions of dynamic IMRT beams for prostate cancer (19 patients, 97 beams) were measured by EPID and compared with the results of ionization chamber (IC) measurements. In addition, pretreatment measurements for prostate IMRT (50 patients, 309 beams) were performed by EPID and were evaluated by the gamma method (criterion: 3 mm/3 %). The signal-to-monitor unit ratio of PD showed dose dependence, indicating ghosting effects. Tongue-and-groove effects were observed as a result of the dose difference in the measured EPID images. The results of PD for clinical IMRT beams were in good agreement with the predicted dose image with average values of 1.37 and 0.25 for γ max and γ ave, respectively. The point doses of PD were slightly, but significantly, higher than the results of IC measurements (p <
0.05 paired t test). However, this small difference seems clinically acceptable. This portal dosimetry system is useful as a rapid and convenient verification tool for dynamic IMRT. © 2012 Japanese Society of Radiological Technology and Japan Society of Medical Physics.

Volume and dosimetric changes and initial clinical experience of a two-step adaptive intensity modulated radiation therapy (IMRT) scheme for head and neck cancer
Tamaki Nishi, Yasumasa Nishimura, Toru Shibata, Masaya Tamura, Naohiro Nishigaito, Masahiko Okumura
Radiotherapy and Oncology, 106, 1, 85, 89, Jan. 2013, [Peer-reviewed]
English, Scientific journal, Purpose: The aim of this study was to show the benefit of a two-step intensity modulated radiotherapy (IMRT) method by examining geometric and dosimetric changes. Material and Methods: Twenty patients with pharyngeal cancers treated with two-step IMRT combined with chemotherapy were included. Treatment-planning CT was done twice before IMRT (CT-1) and at the third or fourth week of IMRT for boost IMRT (CT-2). Transferred plans recalculated initial plan on CT-2 were compared with the initial plans on CT-1. Dose parameters were calculated for a total dose of 70 Gy for each plan. Results: The volumes of primary tumors and parotid glands on CT-2 regressed significantly. Parotid glands shifted medially an average of 4.2 mm on CT-2. The mean doses of the parotid glands in the initial and transferred plans were 25.2 Gy and 30.5 Gy, respectively. D2 (dose to 2% of the volume) doses of the spinal cord were 37.1 Gy and 39.2 Gy per 70 Gy, respectively. Of 15 patients in whom xerostomia scores could be evaluated 1-2 years after IMRT, no patient complained of grade 2 or more xerostomia. Conclusions: This two-step IMRT method as an adaptive RT scheme could adapt to changes in body contour, target volumes and risk organs during IMRT. © 2013 Elsevier Ireland Ltd. All rights reserved. Radiotherapy and Oncology.

A Two-step Intensity-modulated Radiation Therapy Method for Nasopharyngeal Cancer: The Kinki University Experience
Yasumasa Nishimura, Toru Shibata, Kiyoshi Nakamatsu, Shuichi Kanamori, Ryuta Koike, Mitsuru Okubo, Tatsuyuki Nishikawa, Izumi Tachibana, Masaya Tamura, Masahiko Okumura
JAPANESE JOURNAL OF CLINICAL ONCOLOGY, 40, 2, 130, 138, OXFORD UNIV PRESS, Feb. 2010, [Peer-reviewed]
English, Scientific journal, The aim of this study was to analyze the clinical results of our adaptive radiation therapy scheme of a two-step intensity-modulated radiotherapy (IMRT) method for nasopharyngeal cancer (NPC) at Kinki University Hospital.
Between 2000 and 2007, 35 patients with Stage I-IVB NPC treated by IMRT were included. For all patients, treatment-planning computed tomography was done twice before and during IMRT to a total dose of 60-70 Gy/28-35 fractions (median 68 Gy). Chemotherapy (cisplatin 80 mg/m(2)/3 weeks x 1-3 courses) was given concurrently with IMRT for 31 patients.
The 3- and 5-year overall survival rates for the 31 patients treated with concurrent chemotherapy were 88% and 83%, respectively. The 3- and 5-year loco-regional control rates for the 31 patients were 93% and 87%, respectively. Planning target volume delineation for the primary site or involved nodes was insufficient for three early cases, resulting in marginal recurrence in the three patients (9%). Except for one patient with early death, xerostomia scores at 1-2 years were: Grade 0, 11; Grade 1, 17; Grade 2, 5; Grade 3, 1.
Excellent overall survival and loco-regional control rates were obtained by a two-step IMRT method with concurrent chemotherapy for NPC, although marginal recurrence was noted in some early cases.

Effect of lead converter on superheated drop detector response to high-energy neutrons
T Sawamura, JH Kaneko, M Abe, M Tamura, Murai, I, A Homma, F Fujita, S Tsuda
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 505, 1-2, 29, 32, ELSEVIER SCIENCE BV, Jun. 2003
English, Scientific journal, The response of superheated drop detectors or bubble detectors (BDs) was measured for quasi-monoenergetic neutron beams in the 40-75 MeV range and the effects of a lead-converter enclosing the detector introduced to extend the response to the high-energy region were discussed. The experiments were performed in the quasi-monoenergetic neutron beam field at the AVF cyclotron facility, TAKASAKI Ion Accelerator for Advanced Radiation Application (TIARA) of Japan Atomic Energy Research Institute(JAERI). Monte Carlo calculations by MCNPX code were carried out to estimate the lead-converter effect on neutron spectra in a detector exposed to 40-75 MeV quasi-monoenergetic source neutrons. The calculations indicated an increase in the energy ranges of the neutrons of 0.1-10 MeV and this can be expected to increase the number of bubbles produced in the detector. Experimental results showed that the sensitivity was lowered to about a half the nominal sensitivity and that a 3 cm thick lead-converter could compensate for the sensitivity decrease in the experimental energy region. (C) 2003 Elsevier Science B.V. All rights reserved.

Measurement of mass attenuation coefficients around the K absorption edge by parametric X-rays
M Tamura, T Akimoto, Y Aoki, J Ikeda, K Sato, F Fujita, A Homma, T Sawamura, M Narita
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 484, 1-3, 642, 649, ELSEVIER SCIENCE BV, May 2002
English, Scientific journal, When electrons at relativistic velocities pass through a crystal plate, such as silicon, photons are emitted around the Bragg angle for X-ray diffraction. This phenomenon is called parametric X-ray radiation (PXR). The monochromaticity and directivity of PXR are adequate and the energy can be changed continuously by rotating the crystal. This study measured the mass attenuation coefficient around the K-shell absorption edge of Nb, Zr and Mo as a PXR application of monochromatic hard X-ray radiation sources. (C) 2002 Elsevier Science B.V. All rights reserved.

Generation and use of parametric X-rays with an electron linear accelerator
T Akimoto, M Tamura, J Ikeda, Y Aoki, F Fujita, K Sato, A Honma, T Sawamura, M Narita, K Imai
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 459, 1-2, 78, 86, ELSEVIER SCIENCE BV, Feb. 2001
English, Scientific journal, Parametric X-ray radiation (PXR) at energies from 15 to 30 keV was produced by a 45 MeV electron linear accelerator (LINAC) using a silicon (Si) single crystal. The appropriate conditions for generation of good monochromatic hard X-cay fields by PXR were obtained with the LINAC by theoretical calculations and experiments. The PXR intensity increased approximately linearly with the electron energy in the electron energy range of several tens of MeV. The PXR energy increased linearly with the crystal rotation angle that depended on the reflection plane and the observation angle and did not depend on the electron energy. The obtained counts of PXR increased at large observation angles although the energy decreased. The experiments used Si plates with thicknesses of 200, 300, 400, 500, 530, and 625 mum. Differences in angular distribution by the thickness of the Si plates were established. The possibility for PXR applications to material research and other fields is discussed. The off angle of the polished (cut) plane of the crystal was accurately determined using the PXR and the attenuation coefficient around the K-shell absorption edge of Zr, Nb and Mo were measured. (C) 2001 Elsevier Science B.V. All rights reserved.

A Neutron Dosimetry System Using CR-39 for High-energy X-ray Radiation Therapy
YABUTA KAZUTOSHI, MONZEN HAJIME, TAMURA MASAYA, TSURUTA TAKAO, ITO TETSUO, NOTOMI AKIHIRO, NISHIMURA YASUMASA, 医学物理, 34, 3, 139, 148, 31 Jan. 2015
Japanese

頭頸部腫瘍に対するPET/CT simulationを用いた放射線治療成績
MATSUURA TOMOHIRO, TACHIBANA IZUMI, KANAMORI SHUICHI, NAKAMATSU KIYOSHI, YOKOGAWA MASAKI, KOIKE RYUTA, NISHIKAWA TATSUYUKI, ISHIKAWA KAZUKI, TAMURA MASAYA, OKUBO MITSURU, NISHIMURA YASUMASA, Jpn J Radiol, 32, Supplement, 36, 25 Feb. 2014
Japanese

高リスク前立腺癌に対するIMRT
NAKAMATSU KIYOSHI, TAMURA MASAYA, NISHIMURA YASUMASA, Jpn J Radiol, 32, Supplement, 43, 25 Feb. 2014
Japanese

A Neutron Dosimetry System Using CR-39 for High-energy X-ray Radiation Therapy
Yabuta Kazutoshi, Monzen Hajime, Tamura Masaya, Tsuruta Takao, Itou Tetsuo, Nohtomi Akihiro, Nishimura Yasumasa, Japanese Journal of Medical Physics, 34, 3, 139, 148, 2014
Neutrons are produced during radiation treatment by megavolt X-ray energies. However, it is difficult to measure neutron dose especially just during the irradiation. Therefore, we have developed a system for measuring neutrons with the solid state track detector CR-39, which is free from the influence of the X-ray beams. The energy spectrum of the neutrons was estimated by a Monte Carlo simulation method, and the estimated neutron dose was corrected by the contribution ratio of each energy.Pit formation rates of CR-39 ranged from 2.3×10-3 to 8.2×10-3 for each detector studied. According to the estimated neutron energy spectrum, the energy values for calibration were 144 keV and 515keV, and the contribution ratios were approximately 40:60 for 10 MV photons and 20:70 for photons over 15 MV. Neutron doses measured in the center of a high-energy X-ray field were 0.045 mSv/Gy for a 10 MV linear accelerator and 0.85 mSv/Gy for a 20 MV linear accelerator.We successfully developed the new neutron dose measurement system using the solid track detector, CR-39. This on-time neutron measurement system allows users to measure neutron doses produced in the radiation treatment room more easily., Japan Society of Medical Physics, Japanese

高リスク前立腺癌症例に対する125Iシード線源治療
YOKOGAWA MASAKI, NAKAMATSU KIYOSHI, NISHIKAWA TATSUYUKI, TAMURA MASAYA, UEMURA HIROTSUGU, MINAMI TAKAFUMI, NISHIMURA YASUMASA, 日本医学放射線学会総会抄録集, 72nd, S397, 28 Feb. 2013
Japanese

ハイリスク前立腺癌に対するIMRTの治療成績
NAKAMATSU KIYOSHI, NISHIMURA YASUMASA, YOKOGAWA MASAKI, TAMURA MASAYA, SHIBATA TOORU, 日本医学放射線学会総会抄録集, 72nd, S230, 28 Feb. 2013
Japanese

頭頸部腫瘍に対する強度変調放射線治療の確立と標準化のための臨床研究 IMRTの品質管理・品質保証に関する研究
TAMURA MASAYA, 頭頸部腫瘍に対する強度変調放射線治療の確立と標準化のための臨床研究 平成24年度 総括・分担研究報告書, 12, 13, 2013
Japanese

頭頸部腫瘍に対する強度変調放射線治療の確立と標準化のための臨床研究 IMRTの品質管理・品質保証に関する研究
TAMURA MASAYA, 頭頸部腫瘍に対する強度変調放射線治療の確立と標準化のための臨床研究 平成23年度 総括・分担研究報告書, 9, 10, 2012
Japanese

異なる放射線治療計画装置によるDynamic‐IMRT治療計画の比較
TAMURA MASAYA, SHIBATA TOORU, NISHIMURA YASUMASA, SHINTANI NAOYA, SHIMOMURA KOHEI, NISHI TAMAKI, OKUMURA MASAHIKO, Jpn J Radiol, 29, Supplement 1, 49, 25 Jan. 2011
Japanese

肛門管癌に対する根治的放射線治療の検討
TACHIBANA IZUMI, SHIBATA TOORU, KANAMORI SHUICHI, NAKAMATSU KIYOSHI, TAMURA MASAYA, KOIKE RYUTA, NISHIKAWA TATSUYUKI, OKUBO MITSURU, NISHIMURA YASUMASA, Jpn J Radiol, 29, Supplement 1, 42, 25 Jan. 2011
Japanese

高精度治療技術による低リスク高線量放射線治療に関する臨床研究 非小細胞肺癌に対するIMRTに関する研究
NISHIMURA YASUMASA, NAKAMATSU KIYOSHI, TAMURA MASAYA, 高精度治療技術による低リスク高線量放射線治療に関する臨床研究 平成22年度 総括研究報告書, 64, 66, 2011
Japanese

限局型前立腺癌に対するI125シード線源治療後の尿路合併症
NAKAMATSU KIYOSHI, OKUBO MITSURU, TAMURA MASAYA, NISHIMURA YASUMASA, 日本医学放射線学会総会抄録集, 69th, S305, 28 Feb. 2010
Japanese

前立腺癌IMRTの線量増加の治療成績と晩期有害事象の検討
SHIBATA TOORU, NAKAMATSU KIYOSHI, TAMURA MASAYA, NISHIKAWA TATSUYUKI, KOIKE RYUTA, TACHIBANA IZUMI, KANAMORI SHUICHI, NISHIMURA YASUMASA, 日本医学放射線学会総会抄録集, 69th, S302, 28 Feb. 2010
Japanese

ガントリならびにコリメータ角度におけるDMLCの速度と位置の精度評価に関する検討
OKUMURA MASAHIKO, SHIMOMURA KOHEI, TAMURA MASAYA, MATSUMOTO KENJI, ASAI YOSHIYUKI, OBATA YASUNORI, 日本放射線技術学会総会学術大会予稿集, 66th, 221, 222, 26 Feb. 2010
Japanese

高精度治療技術による低リスク高線量放射線治療に関する臨床研究 非小細胞肺癌に対するIMRTに関する研究
NISHIMURA YASUMASA, TAMURA MASAYA, 高精度治療技術による低リスク高線量放射線治療に関する臨床研究 平成21年度 総括研究報告書, 54, 55, 2010
Japanese

肛門管癌に対する根治的放射線治療の臨床成績
TACHIBANA IZUMI, SHIBATA TOORU, KANAMORI SHUICHI, NAKAMATSU KIYOSHI, TAMURA MASAYA, KOIKE RYUTA, NISHIKAWA TATSUYUKI, NISHIMURA YASUMASA, 日本放射線腫よう学会誌, 21, Supplement 1, 126, 19 Aug. 2009
Japanese

Dynamic‐MLC動作精度の定量的評価法の開発
SHIMOMURA KOHEI, MATSUMOTO KENJI, OKUMURA MASAHIKO, TAMURA MASAYA, NISHIMURA YASUMASA, 日本放射線腫よう学会誌, 21, Supplement 1, 173, 19 Aug. 2009
Japanese

前立腺癌に対するI125シード線源治療後の晩期直腸合併症
NAKAMATSU KIYOSHI, OKUBO MITSURU, TAMURA MASAYA, NISHIMURA YASUMASA, 日本放射線腫よう学会誌, 21, Supplement 1, 155, 19 Aug. 2009
Japanese

Pinnacle3を用いたDynamic‐IMRT治療計画の検討
TAMURA MASAYA, SHINTANI NAOYA, SHIMOMURA KOHEI, NISHI TAMAKI, NAGAHATA TOMOMASA, YABUTA KAZUTOSHI, 医学物理 Supplement, 29, 2, 260, 261, Apr. 2009
Japanese

Dynamic MLC IMRTにおける線量分布にbeam hold offが及ぼす影響について
OKUMURA MASAHIKO, SHIMOMURA KOHEI, TAMURA MASAYA, NISHI TAMAKI, OBATA YASUNORI, 日本放射線技術学会総会学術大会予稿集, 65th, 239, 27 Feb. 2009
Japanese

IMRT‐QA解析アプリケーションを用いたDMLC動作特性の検証
TAMURA MASAYA, NISHI TAMAKI, OKUMURA MASAHIKO, MATSUMOTO KENJI, SHIMOMURA KOHEI, SHINTANI NAOYA, SAKAGUCHI KAYUKO, ASAI YOSHIYUKI, SHIBATA TOORU, NISHIMURA YASUMASA, 日本放射線腫よう学会誌, 20, Supplement 1, 148, 22 Sep. 2008
Japanese

Dynamic MLCファイルの解析によるIMRT照射条件の改善について
NISHI TAMAKI, TAMURA MASAYA, OKUMURA MASAHIKO, ASAI YOSHIYUKI, SAKAGUCHI KAYUKO, SHINTANI NAOYA, MATSUMOTO KENJI, SHIMOMURA KOHEI, NISHIMURA YASUMASA, 日本放射線腫よう学会誌, 20, Supplement 1, 149, 22 Sep. 2008
Japanese

トモセラピーの現状と遠隔治療計画支援システム
SHIBAMOTO YUTA, SUGIE CHIKAO, OGINO HIROYUKI, ODA KYOTA, KATO TOKUSHI, TAMURA MASAYA, MATSUO MASAYUKI, MIMURA MIKIO, Radiat Med, 26, 33, 25 Apr. 2008
Japanese

Palliative radiotherapy for bone metastases with TomoTherapy
ODA KYOTA, TAMURA MASAYA, TAKADA NAOYUKI, KATO NORIFUMI, SHIBAMOTO YUTA, 臨床放射線, 52, 12, 1691, 1698, 10 Nov. 2007
金原出版, Japanese

TomoTherapy―新世代放射線治療機の導入と実際の運用―
ODA KEITA, TAMURA MASAYA, TAKADA NAOYUKI, KATO NORIFUMI, SHIBAMOTO YUTA, 日本癌治療学会誌, 42, 2, 751, 20 Sep. 2007
Japanese

緩和医療におけるTomoTherapyの意義―骨転移に対する治療から
ODA KYOTA, TAMURA MASAYA, TAKADA TADAYUKI, KATO NORIFUMI, SHIBAMOTO YUTA, 日本医学放射線学会学術集会抄録集, 66th, S329, 28 Feb. 2007
Japanese

TomoTherapyによる高精度放射線治療の経験
ODA KEITA, TAMURA MASAYA, TAKADA NAOYUKI, KATO NORIFUMI, SHIBAMOTO YUTA, 臨床放射線, 51, 12, 1776, 1782, 10 Nov. 2006
金原出版, Japanese

良性脳腫瘍に対するTomoTherapy
ODA KYOTA, TAMURA MASAYA, TAKADA NOBUYUKI, KATO NORIFUMI, KAMATA HAJIME, SHIBAMOTO YUTA, 日本放射線腫よう学会誌, 18, Supplement 1, 192, 25 Oct. 2006
Japanese

TomoTherapyによる高精度放射線治療
ODA KYOTA, KATO TOKUSHI, TAMURA MASAYA, GOTO SHIN'ICHI, KAMATA HAJIME, SHIRATO HIROKI, SHIBAMOTO YUTA, 日本医学放射線学会学術集会抄録集, 65th, S214, 25 Feb. 2006
Japanese

Helical tomotherapyのためのコミッショニングドジメトリ
GOTO SHIN'ICHI, ODA KYOTA, TAMURA MASAYA, KATO TOKUSHI, NAGAO KICHISUKE, IDE AYUMI, SHIBAMOTO YUTA, 日本放射線腫よう学会誌, 17, Supplement 1, 137, 25 Oct. 2005
Japanese

Pinnacleを用いた強度変調放射線治療のInverse PlanningとTomoTherapyへの一考察
TAMURA MASAYA, SHIRATO HIROKI, AOYAMA EIJI, FUJINO KENJI, FUJITA KATSUHISA, ONIMARU RIKIYA, KATO TOKUSHI, ODA KYOTA, IDE WATARU, SHIBAMOTO YUTA, 日本放射線腫よう学会誌, 17, Supplement 1, 102, 25 Oct. 2005
Japanese

画像誘導放射線治療(原標題は英語)
SHIRATO HIROKI, SUZUKI KEISHIRO, NISHIOKA TAKESHI, TAMURA MASAYA, ONIMARU RIKIYA, AOYAMA HIDEFUMI, 日本医学放射線学会秋季臨床大会抄録集, 41st, S462, 05 Sep. 2005
Japanese

JSNS分光器中性子ビームライン遮蔽概念設計
KAWAI MASAYOSHI, NIITA KOJI, MAEKAWA FUJIO, OIKAWA KEN'ICHI, KAJIMOTO RYOICHI, KAMIYAMA TAKASHI, SUZUYA KENTARO, TAMURA MASAYA, NAKAJIMA KENJI, HARADA MASAHIDE, 日本原子力学会秋の大会予稿集(CD-ROM), 2005, C24, 12 Aug. 2005
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Shielding Design for Target Trolley for a Spallation Neutron Source in the J-PARC Project
TAMURA MASAYA, MAEKAWA FUJIO, HARADA MASAHIDE, HAGA KATSUHIRO, KONNO CHIKARA, 日本原子力研究所JAERI-Tech, 63P, Mar. 2005
Japanese

J‐PARC核破砕中性子源施設における水銀ターゲット台車の遮蔽検討
TAMURA MASAYA, MAEKAWA FUJIO, HAGA KATSUHIRO, KONNO CHIKARA, 日本原子力学会春の年会要旨集, 42nd, 0144, 11 Mar. 2004
Japanese

J‐PARC/MLF実験施設の長尺建家に関する予備検討~遮蔽検討~
OIKAWA KEN'ICHI, TAMURA MASAYA, HARADA MASAHIDE, MAEKAWA FUJIO, KATO TAKASHI, IKEDA YUJIRO, 日本中性子科学会年会講演概要集, 4th, 105, 2004
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J‐PARC核破砕中性子源におけるビームライン遮蔽厚簡易評価式
TAMURA MASAYA, MAEKAWA FUJIO, OIKAWA KEN'ICHI, HARADA MASAHIDE, KATO TAKASHI, IKEDA YUJIRO, 日本中性子科学会年会講演概要集, 4th, 101, 2004
Japanese

JSNSビームラインタスクグループ活動報告
OIKAWA KEN'ICHI, MAEKAWA FUJIO, TAKADA HIROSHI, SOYAMA KAZUHIKO, YOSHIDA KATSUHIKO, FURUSAKA MICHIHIRO, ARAI MASATOSHI, TAMURA MASAYA, IKEDA YUJIRO, 日本中性子科学会年会講演概要集, 3rd, 49, 10 Dec. 2003
Japanese

核破砕中性子源施設の3次元遮蔽設計 計算手法
MAEKAWA FUJIO, TAMURA MASAYA, IKEDA YUJIRO, 日本原子力学会春の年会要旨集, 41st, 149, 05 Mar. 2003
Japanese

核破砕中性子源施設の3次元遮蔽設計 計算結果
TAMURA MASAYA, MAEKAWA FUJIO, IKEDA YUJIRO, 日本原子力学会春の年会要旨集, 41st, 150, 05 Mar. 2003
Japanese

3-Dimensional Shielding Design for a Spallation Neutron Source Facility in the High-intensity Proton Accelerator Project
TAMURA MASAYA, MAEKAWA FUJIO, 日本原子力研究所JAERI-Tech, 60P, Mar. 2003
Japanese

パラメトリックX線放射の強度特性
YOSHIDA TSUYOSHI, AKIMOTO TADASHI, TAMURA MASAYA, FUJITA FUMIYUKI, MURAI IKUO, SATO KOICHI, SHIMAZU YOICHIRO, NARITA MASAKUNI, IMAI KAZUAKI, 応用物理学会学術講演会講演予稿集, 63rd, 1, 86, 24 Sep. 2002
Japanese

過熱液滴型中性子線量計の高エネルギー領域における応答
SAITO TSUKASA, SAWAMURA TERUKO, TAMURA MASAYA, YAMADA TAKUMA, ABE MASASHI, MURAI IKUO, HONMA AKIRA, FUJITA FUMIYUKI, TSUDA SHUICHI, 日本原子力学会秋の大会予稿集, 2001, 58, 10 Aug. 2001
Japanese

パラメトリックX線による標的結晶の特性測定
TAMURA MASAYA, AKIMOTO TADASHI, IKEDA JIRO, HARA YUKIHIRO, FUJITA FUMIYUKI, HONMA AKIRA, SAWAMURA TERUKO, NARITA MASAKUNI, IMAI KAZUAKI, 日本原子力学会秋の大会予稿集, 2001, 183, 10 Aug. 2001
Japanese

パラメトリックX線放射のスペクトル測定 (III)
TAMURA MASAYA, AKIMOTO TADASHI, IKEDA JIRO, FUJITA FUMIYUKI, HONMA AKIRA, SATO KOICHI, SAWAMURA TERUKO, NARITA MASAKUNI, 日本原子力学会秋の大会予稿集, 1999, 52, 10 Aug. 1999
Japanese

Study of the Parametric X-ray spectrum. (II).
TAMURA MASAYA, AKIMOTO TADASHI, FUJITA FUMIYUKI, HONMA AKIRA, SATO KOICHI, TANIDA HIROAKI, SAWAMURA TERUKO, NARITA MASAKUNI, 日本原子力学会秋の大会予稿集, 1998, 116, Sep. 1998
Japanese

Generation of parametric X-ray by electron beam accelerator, and its characteristics.
TAMURA MASAYA, AKIMOTO TADASHI, FUJITA FUMIYUKI, HONMA AKIRA, SATO KOICHI, TANIDA HIROAKI, SAWAMURA TERUKO, NARITA MASAKUNI, UTNL-R(東京大学大学院工学系研究科附属原子力工学研究施設), 361, 39, 40, Jan. 1998
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