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Research on irradiation methods and quality assurance that can freely change the treatment depth and region in BNCT

Research Project

Project/Area Number 19H04485
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90130:Medical systems-related
Research InstitutionKyoto University

Principal Investigator

Tanaka Hiroki  京都大学, 複合原子力科学研究所, 教授 (70391274)

Co-Investigator(Kenkyū-buntansha) 櫻井 良憲  京都大学, 複合原子力科学研究所, 准教授 (20273534)
川端 信司  大阪医科薬科大学, 医学部, 准教授 (20340549)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2020: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords中性子捕捉療法 / BNCT / 多門照射 / 品質保証 / 適応拡大 / 強度変調体 / ボーラス
Outline of Research at the Start

現在サイクロトロン加速器BNCTにおける治験は脳腫瘍、頭頸部がんに限っているが、装置の増加に伴い、今後は表層がん、体幹部への照射へ適応拡大が期待される。
本研究においては治療深度・領域を自由に変更可能(オーダーメイド)な照射方法を開発することと、その品質保証方法を確立することを目的とする。表層がんに対しては新たにBNCT用ボーラス、フィルターを開発し、均一かつ表層に照射する手法を開発する。体幹部のような7cmよりも深部に対しては多門照射の最適化行うことで深部に対して均一に照射する手法について開発を行 い、加速器BNCTの適応拡大に必要となる品質保証方法を含めた基盤技術を確立する。

Outline of Final Research Achievements

Aiming to expand the application of the accelerator-based neutron system for boron neutron capture therapy, we developed an irradiation method in which the treatment depth and area can be freely changed (custom-made), and established a quality assurance method for this method. We confirmed that a deformable gel bolus for shallow areas, multiple irradiations with intensity modulators up to about 30 mm, and multi-port irradiations for deep areas were effective. As a quality assurance method, a series of processes were established to compare the thermal neutron flux between the irradiation test using a water phantom created from CT data using a 3D printer and the simulation based on the treatment plan. The effectiveness of the patient quality assurance method was confirmed.

Academic Significance and Societal Importance of the Research Achievements

加速器中性子システムを用いたホウ素中性子捕捉療法は現在、切除不能な局所進行又は局所再発の頭頸部癌のみに対して保険適応されており、他の疾患への適応拡大が望まれている。本研究において実施した治療深度・領域を自由に変更可能な照射方法の実現により、浅い部分から、深部への治療が可能であることを示すことができた。また、この照射方法の品質保証方法を確立した。電荷を持たない中性子を制御して照射できることは学術的に有意義であることを示すことができた。今後、臨床応用により、加速器ホウ素中性子捕捉療法の適応拡大が期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (20 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (15 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Journal Article] Development of an irradiation method for superficial tumours using a hydrogel bolus in an accelerator-based BNCT2021

    • Author(s)
      Sasaki Akinori、Tanaka Hiroki、Takata Takushi、Tamari Yuki、Watanabe Tsubasa、Hu Naonori、Kawabata Shinji、Kudo Yoshihiro、Mitsumoto Toshinori、Sakurai Yoshinori、Suzuki Minoru
    • Journal Title

      Biomedical Physics & Engineering Express

      Volume: 8 Issue: 1 Pages: 015015-015015

    • DOI

      10.1088/2057-1976/ac3d73

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of a dose distribution shifter to fit inside the collimator of a Boron Neutron Capture Therapy irradiation system to treat superficial tumours2021

    • Author(s)
      N. Hu, H. Tanaka, S. Yoshikawa, M. Miyao, K. Akita, T. Aihara, K. Ono
    • Journal Title

      Physica Medica

      Volume: 82 Pages: 17-24

    • DOI

      10.1016/j.ejmp.2021.01.003

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Improving the spatial resolution of a pixelated LaBr3(Ce) scintillator coupled with a multi-pixel photon counter array for boron neutron capture therapy2021

    • Author(s)
      Keita Okazaki, Hiroki Tanaka, Takushi Takata, Naonori Hu, Tetsuya Mukawa, Yoshinori Sakurai, Minoru Suzuki
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A

      Volume: 992 Pages: 165026-165026

    • DOI

      10.1016/j.nima.2021.165026

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characteristic evaluation of the thermal neutron irradiation field using a 30 MeV cyclotron accelerator for basic research on neutron capture therapy2020

    • Author(s)
      Tanaka H, Takata T, Watanabe T, Suzuki M, Mitsumoto T, Kawabata S, Masunaga S, Kinashi Y, Sakurai Y, Maruhashi A, Ono K.
    • Journal Title

      Nuclear Inst. And Methods in Physics Research, A

      Volume: 983 Pages: 164533-164533

    • DOI

      10.1016/j.nima.2020.164533

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Microdosimetric quantities of an accelerator-based neutron source used for boron neutron capture therapy measured using a gas-filled proportional counter2020

    • Author(s)
      Hu Naonori、Tanaka Hiroki、Takata Takushi、Okazaki Keita、Uchida Ryohei、Sakurai Yoshinori
    • Journal Title

      Journal of Radiation Research

      Volume: 61 Issue: 2 Pages: 214-220

    • DOI

      10.1093/jrr/rrz101

    • NAID

      120006898190

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Study of optimal irradiation method for superficial tumors using a hydrogel bolus in cyclotron-based BNCT2021

    • Author(s)
      Akinori Sasaki、Takushi Takata、Yuki Tamari、Tsubasa Watanabe、Naonori Hu、Shinji Kawabata、Yoshihiro Kudo、 Toshinori Mitsumoto、Nishiki Matsubayashi、Yoshinori Sakurai、Minoru Suzuki、Hiroki Tanaka
    • Organizer
      第121回日本医学物理学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Study on the optimization method of thermal neutron flux distribution by overlapping multiple irradiation fields for superficial tumors in accelerator-based BNCT2021

    • Author(s)
      Akinori Sasaki、Takushi Takata、Naonori Hu、Nishiki Matsubayashi、Yoshinori Sakurai、Hiroki Tanaka
    • Organizer
      19th International Congress on Neutron Capture Therapy
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 加速器BNCTにおける表在性腫瘍に対する複数照射野の重ね合わせによる熱中性子フラックス分布の最適化手法に関する研究2021

    • Author(s)
      笹木彬礼、高田卓志、呼尚徳、櫻井良憲、松林錦、田中浩基
    • Organizer
      第17回日本中性子捕捉療法学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 加速器BNCTシステムの要件2021

    • Author(s)
      田中浩基
    • Organizer
      第17回日本中性子捕捉療法学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 加速器を用いたホウ素中性子捕捉療法の現状2021

    • Author(s)
      田中浩基
    • Organizer
      第121回日本医学物理学会学術大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 世界初の加速器を用いたBNCT治療システムの実現2021

    • Author(s)
      田中浩基
    • Organizer
      第29回放射線利用総合シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Performance test of the new bolus in BNCT using cyclotron-based epithermal neutron source and 3D printed water phantom2020

    • Author(s)
      A. Sasaki, T. Takata, Y. Kudo, M. Suzuki, Y. Sakurai, T. Mitsumoto, H. Tanaka
    • Organizer
      Online conference of the particle therapy co-operative group
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 京都大学複合原子力科学研究所におけるBNCT研究の現状2020

    • Author(s)
      田中浩基
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 加速器を用いたBNCT治療システムの現状2020

    • Author(s)
      田中浩基
    • Organizer
      第60回日本核医学会学術総会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Development of new bolus for application in boron neutron capture therapy2019

    • Author(s)
      Akinori Sasaki, Takushi Takata, Yoshihiro Kudo, Naonori Hu, Minoru Suzuki, Yoshinori Sakurai, Toshinori Mitsumoto, Hiroki Tanaka
    • Organizer
      第117回日本医学物理学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ホウ素中性子捕捉療法のためのツイン小型電離箱を用いた水ファントム中の線量分布の測定2019

    • Author(s)
      熊谷侑哉、高田卓志、赤堀清崇、鈴木実、田中浩基
    • Organizer
      第16回日本中性子捕捉療法学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] BNCTにおける3Dプリント技術を駆使した患部ファントムを用いたQAに関する研究2019

    • Author(s)
      笹木彬礼、高田卓志、川端信司、宮武伸一、櫻井良憲、鈴木実、田中浩基
    • Organizer
      第16回日本中性子捕捉療法学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 熱外中性子を用いたホウ素中性子捕捉療法におけるボーラス形状最適化の検討2019

    • Author(s)
      高田 卓志、田中 浩基、櫻井 良憲、笹木 彬礼、丸橋 晃、鈴木 実
    • Organizer
      第16回日本中性子捕捉療法学会学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Measurement of dose distribution in water phantom using twin small ionization chambers for Boron Neutron Capture Therapy2019

    • Author(s)
      Yuya Kumagai, Takushi Takata, Keita Okazaki, Akinori Sasaki, Kiyotaka Akabori, Yoshinori Sakurai, Hiroki Tanaka
    • Organizer
      10th Young BNCT Researchers Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of new bolus for BNCT by C-BENS -Irradiation test of 3D printed foot phantom-2019

    • Author(s)
      Akinori Sasaki, Takushi Takata, Yoshihiro Kudo, Naonori Ko, Minoru Suzuki , Yoshinori Sakurai, Toshinori Mitsumoto, Hiroki Tanaka
    • Organizer
      10th Young BNCT Researchers Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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