Development of a phenomenological RBE model for carbon ion radiotherapy and high-precision clinical analysis
Project/Area Number |
19K08188
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 52040:Radiological sciences-related
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Research Institution | International University of Health and Welfare (2022) National Institutes for Quantum Science and Technology (2019-2021) |
Principal Investigator |
Kohno Ryosuke 国際医療福祉大学, 保健医療学部, 教授 (20392227)
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Co-Investigator(Kenkyū-buntansha) |
鈴木 雅雄 国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 放射線障害治療研究部, 上席研究員(定常) (70281673)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Project Status |
Completed (Fiscal Year 2022)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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Keywords | 炭素線治療 / LET / RBE / 臨床解析 / 頭頸部がん / 視神経炎 / 線量平均LET / RBE計算モデル / Carbon-ion Radiotherapy / Head and neck cancer / 生物学的効果比 / 線エネルギー付与 / 線量平均線エネルギー付与 / 生物線量 |
Outline of Research at the Start |
本研究では、炭素線治療に対して、腫瘍や正常組織毎に生物線量を計算できる実測ベースRBE計算モデルを構築することが第一の目的である。そして、その手法を組み込んだ炭素線治療に対する高精度臨床解析システムを開発し、より正確な臨床解析を行うことが第二の目的である。本研究により、炭素線治療の有用性の評価はもちろん、高精度な臨床解析により、有害事象の知見を深め、有害事象の予測や予防に役立てることが本研究の意義であるとも考えている。
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Outline of Final Research Achievements |
The dose-averaged LET (LETd) calculation tool for clinical analysis of patients treated with carbon-ion radiotherapy (CIRT) was developed. The head and neck patients treated with CIRT were analyzed by this calculation tool. For prescribed RBE-weighted dose of 64 Gy (RBE) in adenoid cystic carcinoma (ACC) patients, we observed the minimum LETd was a determinant of local control (p<0.05). For the optic neuropathy, it was obvious that the optic neuropathy had a greater effect from RBE-weighted dose rather than dose-averaged LET. A phenomenological RBE calculation model based on the LETd was simply paramterised and developed by fitting in vitro experimental data in the literature with data from our experiments.
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Academic Significance and Societal Importance of the Research Achievements |
本研究は、炭素線治療の有用性を評価しただけでなく、高精度な臨床解析により、局所制御や有害事象に関わる新たな因子を明らかにすることができた。これは炭素線治療の理解を深める興味深い成果であり、本研究の学術的意義は高い。加えて、実測ベース型RBE計算モデルの開発は、任意の組織に対する生物線量の計算を可能にすることから、炭素線治療のより一層の治療成績の向上に繋がる可能性を示すものであり、社会的意義も高い。
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Report
(5 results)
Research Products
(55 results)
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[Journal Article] Evaluation of Patient-Specific Quality Assurance for Carbon Ion Radiotherapy Using Full Energy Scanning Method at QST Hospital2022
Author(s)
Asami Inomata, Masashi Katsumata, Sung Hyun Lee, Yui Suzuki, Takeo Nakajima, Wataru Furuichi, Keishi Yamaoka, Atsushi Yamamoto, Hideyuki Mizuno, Ryosuke Kohno
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Journal Title
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology
Volume: 11
Issue: 04
Pages: 200-209
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Differentiation between non‐small cell lung cancer and radiation pneumonitis after carbon‐ion radiotherapy by 18F‐FDG PET/CT texture analysis2021
Author(s)
Makito Suga, Ryuichi Nishii, Kenta Miwa, Yuto Kamitaka, Kana Yamazaki, Kentaro Tamura, Naoyoshi Yamamoto, Ryosuke Kohno, Masato Kobayashi, Katsuyuki Tanimoto, Hiroshi Tsuji & Tatsuya Higashi
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Journal Title
Scientific Reports
Volume: 11
Issue: 1
Pages: 11509-11509
DOI
Related Report
Peer Reviewed
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[Journal Article] Estimating the biological effects of helium, carbon, oxygen, and neon ion beams using 3D silicon microdosimeters.2021
Author(s)
Sung Hyun Lee, Kota Mizushima, Ryosuke Kohno, Yoshiyuki Iwata, Shunsuke Yonai, Toshiyuki Shirai, Vladimir A Pan, David Bolst, Linh T Tran, Anatoly B Rosenfeld, Masao Suzuki, Taku Inaniwa
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Journal Title
Physics in Medicine and Biology
Volume: 66
Issue: 4
Pages: 1-13
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Application of lung substitute material as ripple filter for multi-ion therapy with helium-, carbon-, oxygen-, and neon-ion beams.2021
Author(s)
Taku Inaniwa, Yasushi Abe, Masao Suzuki, Sung Hyun Lee, Kota Mizushima, Taku Nakaji, Dousatsu Sakata, Shinji Sato, Yoshiyuki Iwata, Nobuyuki Kanematsu, Toshiyuki Shirai
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Journal Title
Physics in Medicine and Biology
Volume: 66
Issue: 5
Pages: 1-10
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Unresectable Chondrosarcomas Treated With Carbon Ion Radiotherapy: Relationship Between Dose-averaged Linear Energy Transfer and Local Recurrence.2020
Author(s)
Shinnosuke Matsumoto, Sung Hyun Lee, Reiko Imai, Taku Inaniwa, Naruhiro Matsufuji, Mai Fukahori, Ryosuke Kohno, Shunsuke Yonai, Noriyuki Okonogi, Shigeru Yamada, Nobuyuki Kanematsu
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Journal Title
Anticancer Research
Volume: 40
Issue: 11
Pages: 6429-6435
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] MICRODOSIMETRIC STUDY FOR HELLIUM-ION BEAM USING FULLY 3D SILICON MICRODOSIMETERS2020
Author(s)
Sung Hyun Lee, Kota Mizushima, Dosatsu Sakata, Ryosuke Kohno, Makoto Sakama, Yoshiyuki Iwata, Toshiyuki Shirai, Vladimir Pan, Linh T Tran, Anatoly B Rosenfeld, Masao Suzuki, Taku Inaniwa
Organizer
MMND-ITRO 2020
Related Report
Int'l Joint Research
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[Presentation] PET画像のTexture解析を用いた非小細胞肺癌と放射線肺臓炎との診断能評価2019
Author(s)
菅 満喜人, 西井 龍一, 山崎 香奈, 三輪 建太, 上髙 祐人, 河野 良介, 山岡 恵士, 山本 淳史, 谷本 克之, 東 達也, 辻 比呂志
Organizer
第32回日本放射線腫瘍学会
Related Report
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[Presentation] Microdosimetric study at the NIRS scanning beam for the multi-ion therapy2019
Author(s)
Sung Hyun Lee, Kota Mizushima, Dosatsu Sakata, Makoto Sakama, Ryosuke Kohno, Yoshiyuki Iwata, Toshiyuki Shirai, Linh T Tran, Anatoly B Rosenfeld, Masao Suzuki, Taku Inaniwa
Organizer
PTCOG-AO 2019
Related Report
Int'l Joint Research
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[Book] 測定ベースの IMRT QA における許容限界及び方法論2023
Author(s)
赤坂浩亮, 富田哲也, 街道亮斗, 米田洋介, 齋藤正英, 高橋侑大, 谷本祐樹, 中林匡, 本間大晴, 松永卓磨, 南佳孝, 河野千恵, 櫻木亜美, 白崎展行, 武居秀行
Total Pages
46
Publisher
日本医学物理士会
Related Report
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[Book] 放射線治療中の画像誘導におけるイメージング線量: 定量化, 管理及び低減2022
Author(s)
河野千恵, 柴田洋希, 伊藤旭, 井上耕介, 沖裕也, 白崎展行, 中林匡, 廣瀧康太, 大野剛, 櫻木亜美, 武居秀行, 河野良介
Total Pages
34
Publisher
日本医学物理士会
Related Report
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