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Development of real-time T/N ratio measuring technique for BNCT

Research Project

Project/Area Number 15H04242
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear engineering
Research InstitutionOsaka University

Principal Investigator

Murata Isao  大阪大学, 工学研究科, 教授 (30273600)

Co-Investigator(Kenkyū-buntansha) 吉橋 幸子  名古屋大学, 工学研究科, 准教授 (20403157)
日下 祐江  大阪大学, 工学研究科, 技術職員 (30781314)
佐藤 文信  大阪大学, 工学研究科, 教授 (40332746)
杉本 久司  大阪大学, 工学研究科, 技術専門職員 (40379144)
伊達道 淳  大阪大学, 工学研究科, 技術専門員 (50379145)
加藤 逸郎  大阪大学, 歯学研究科, 助教 (60314390)
宮丸 広幸  大阪府立大学, 工学(系)研究科(研究院), 教授 (80243187)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Fiscal Year 2018: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2016: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
KeywordsBNCT / T/N比 / SPECT / GAGG / リアルタイム / 治療効果 / ホウ素濃度 / 478keV / リアルタイム計測 / ガンマ線 / ホウ素 / リアルタイム測定 / CdTe / MCNP5
Outline of Final Research Achievements

Boron Neutron Capture Therapy (BNCT) is known as a promising radiation cancer therapy. For the realization, a special SPECT system is indispensable to know the BNCT effect by monitoring T/N Ratio (concentration ratio of 10B in tumor to normal cell) in realtime. In this study, basic researches for the T/N-SPECT were carried out. First, we investigated an elemental device to detect 478 keV γ-rays emitted from BNC reaction, and decided to use GAGG scintillator as the key detection element for T/N-SPECT. Then, we aimed to carry out the performance test by using an epi-thermal neutron source produced with a DT neutron source. However, due to the Northern Osaka Earthquake the accelerator was seriously broken so that it became not possible to carry out experiments. Instead we utilized an AmBe source to prepare an epi-thermal neutron source, though it was a little weak. We confirmed only the basic validity. We think, we should do more precise experiments using the DT neutron source in future.

Academic Significance and Societal Importance of the Research Achievements

ホウ素中性子捕捉療法は、腫瘍細胞選択性がある新しい放射線がん治療法である。現在その普及が急がれているが、その要素技術の一つに治療効果のリアルタイム計測がある。本研究では、治療効果の指標の一つであるT/N比(腫瘍細胞の正常細胞に対する蓄積ホウ素濃度比)をリアルタイムで計測するシステム(T/N-SPECT)の開発を目指した要素技術開発及び設計研究を進めた。γ線計測デバイスをGAGGに決定し、コリメータを含めた装置の設計を行った。更にプロトタイプ装置を製作し、T/N-SPECTの原理実証実験を行った。今後、実機の製作を進めるが、BNCTが普及したあかつきには治療効果推定に使用されることが見込まれる。

Report

(5 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (11 results)

All 2019 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Study on measuring device arrangement of array-type CdTe detector for BNCT-SPECT2016

    • Author(s)
      Masanobu Manabe, Soichiro Nakamura, Isao Murata
    • Journal Title

      Reports of Practical Oncology and Radiotherapy

      Volume: 21 Pages: 102-107

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cross Talk Experiment with Two-element CdTe Detector and Collimator for BNCT-SPECT2016

    • Author(s)
      Masanobu Manabe, Ryosuke Ohya, Nobuhide Saraue, Fuminobu Sato, Isao Murata
    • Journal Title

      Journal of Radiation Protection and Research

      Volume: 41(3) Pages: 206-211

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Basic detection property of an array-type CdTe detector for BNCT-SPECT -Measurement and analysis of anti-coincidence events2016

    • Author(s)
      Masanobu Manabe, Fuminobu Sato, Isao Murata
    • Journal Title

      Applied Radiation and Isotopes

      Volume: 118 Pages: 389-394

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] BNCTのためのT/N-SPECTのコリメータ設計2019

    • Author(s)
      柴田 紗希、守實 友梨、玉置 真悟、日下 祐江、村田 勲
    • Organizer
      第16回日本中性子捕捉療法学会学術大会、9月7日~8日、京都大学宇治キャンパス宇治おうばくプラザ、P1-07 (2019).
    • Related Report
      2018 Annual Research Report
  • [Presentation] Design of collimator for T/N-SPECT for BNCT2018

    • Author(s)
      Saki Shibata, Kentaro Minami, Ryosuke Ohya, Yuri Morizane, Shingo Tamaki, Sachie Kusaka, Fuminobu Sato, Isao Murata
    • Organizer
      18th International Congress on Neutron Capture Therapy, Oct. 28-Nov. 2, 2018, Taipei, Taiwan
    • Related Report
      2018 Annual Research Report
  • [Presentation] Design of collimator for T/N-SPECT for BNCT2018

    • Author(s)
      Saki Shibata, Ryosuke Ohya, Kentaro Minami, Shingo Tamaki, Sachie Kusaka, Fuminobu Sato, Isao Murata
    • Organizer
      18th International Congress on Neutron Capture Therapy
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] BNCTにおけるT/N-SPECTのコリメータ設計2018

    • Author(s)
      柴田紗希,大屋瞭介,南健太郎,佐藤文信,村田 勲
    • Organizer
      日本原子力学会2018年春の年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Experimental demonstration of real time measurement of 10B concentration for BNCT2017

    • Author(s)
      Ryosuke Ohya, Nobuhide Saraue, Kentaro Minami, Fuminobu Sato, Isao Murata
    • Organizer
      9th Young Researchers’ BNCT Meeting
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] BNCTのためのT/N比リアルタイム計測装置用検出素子の検討2016

    • Author(s)
      大屋遼介、皿上順英、真鍋正伸、佐藤文信、村田勲
    • Organizer
      応用物理学会
    • Place of Presentation
      東京工業大学
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] BNCTのためのT/N比リアルタイム計測装置用検出素子の検討2016

    • Author(s)
      大屋瞭介、 皿上順英、真鍋正伸、 佐藤文信、 村田 勲
    • Organizer
      第63回応用物理学会
    • Related Report
      2016 Annual Research Report
  • [Presentation] T/N-SPECTに用いる検出素子の検討2016

    • Author(s)
      大屋瞭介、皿上順英、真鍋正伸、佐藤文信、村田 勲
    • Organizer
      第13回日本中性子捕捉療法学会
    • Related Report
      2016 Annual Research Report

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Published: 2015-04-16   Modified: 2022-11-04  

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