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Development and verification an optical three-dimensional dosimeter for using X-ray therapy

Research Project

Project/Area Number 18K15583
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionThe University of Tokyo

Principal Investigator

Ohta Takeshi  東京大学, 医学部附属病院, 特任助教 (20727408)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsシンチレーター / CMOSカメラ / 線量分布測定 / シンチレータ / 患者QA / 線量分布 / プラスチックシンチレーター / マシンQA / 2次元検出器 / X線検出 / 検証装置 / シンチレーター検出 / X線プロファイル / QA / 医学物理(学) / ファントム / 3次元線量測定器
Outline of Final Research Achievements

Goal of this research in the initial was to develop a 3D dose distribution measuring instrument. However, during of basic experiments, it was determined that it would be difficult to develop a 3D dose distribution measuring instrument to a practical level of quality, and the goal was switched to the practical application of a 2D dose distribution measuring instrument. The goals were also set to achieve high resolution, high accuracy, and practical performance for use in patient QA.

Academic Significance and Societal Importance of the Research Achievements

シンチレーター式線量分布測定装置の開発は実用化まで到達した。現在X線の検証用及び不変性試験の品室管理に用いられる線量分布測定装置は海外製品のみで占められている。国産として新方式のシンチレーター式線量分布測定装置が加わることの意義は大きい、今後VMAT増加に伴い計画から検証及び判断を迅速に行う必要があると予測される。本装置は高精度と高解像度の測定及び高い再現性を提供するものであり、これまで半導体や電離箱式またフィルム式では実視が難しかった測定を可能とし、本装置が普及したときの波及効果は大きい。X線の深度方向の線量分布も容易に取得可能であり教育目的にも理解の一助として役立てられる。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2023 2022 2020 2019

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Monitoring the build-up of hydrogen polarization for polarized hydrogen?deuteride (HD) targets with nuclear magnetic resonance (NMR) at 17 T2020

    • Author(s)
      Ohta T.、Fujiwara M.、Hotta T.、Ide I.、Ishizaki K.、Kohri H.、Yanai Y.、Yosoi M.
    • Journal Title

      Review of Scientific Instruments

      Volume: 91 Issue: 9 Pages: 095104-095104

    • DOI

      10.1063/5.0005696

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] シンチレーターを用いたRALSの線源位置確認と線量分布の計測2022

    • Author(s)
      太田 岳史
    • Organizer
      mHDR研究会第18回学術研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] プラスチックシンチレータープレートを用いたガンマナイフ精度管理の検討2022

    • Author(s)
      太田 岳史
    • Organizer
      第31回日本定位放射線治療学会 演題登録
    • Related Report
      2022 Annual Research Report
  • [Presentation] Trial of dose distribution QA using smartphone and tablet camera with scintillator2019

    • Author(s)
      Takeshi Ohta
    • Organizer
      Engineering and Physical Sciences in Medicine Conference and Asia-Oceania Congress of Medical Physics 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 放射線治療装置の放射線照射量分布測定装置2023

    • Inventor(s)
      太田 岳史
    • Industrial Property Rights Holder
      太田 岳史
    • Industrial Property Rights Type
      特許
    • Filing Date
      2023
    • Related Report
      2022 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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