• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study on development and application of three-dimensional radiochromic gel dosimeter using iodine complex

Research Project

Project/Area Number 20K08039
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionHiroshima International University

Principal Investigator

Hayashi Shin-ichiro  広島国際大学, 保健医療学部, 教授 (20238108)

Co-Investigator(Kenkyū-buntansha) 五東 弘昭  横浜国立大学, 大学院工学研究院, 准教授 (80635235)
小林 毅範  帝京大学, 医療技術学部, 教授 (10459365)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords3次元ゲル線量計 / ラジオクロミックゲル / 医学物理学 / 放射線治療 / 治療計画 / 光学CT装置 / 放射線化学 / 化学線量計 / ゲル線量計 / 3次元線量評価 / ポリビニルアルコール / 医学物理 / ラジオクロミック線量計 / 光学CT / 三次元線量分布 / 品質管理 / 品質保証 / ラジオクロミック / 線量分布 / ヨウ素錯体 / 線量評価
Outline of Research at the Start

本研究では,放射線治療における3次元線量分布を直接評価するためのツールとして,我々が先の研究で見出した放射線照射によるヨウ素の酸化とそれに伴う錯体形成による発色を利用した新規な機序による3次元ラジオクロミックゲル線量計に対して,より有効な組成探索と最適化を行い,光学的CT装置を用いて3次元線量分布を評価する.これにより放射線治療における品質保証/品質管理の拡充を目指して,その基礎特性評価から線量やエネルギー,読み出し装置(光学的CT)に最適化した3次元ゲル線量計の開発を行い,臨床で用いることの出来る線量評価ツールとして確立することを目的とする.

Outline of Final Research Achievements

As a tool for directly evaluating three-dimensional dose distribution in radiotherapy, we developed a new radiochromic gel dosimeter that utilizes the red color produced by the complex of iodine and polyvinyl alcohol formed in a gel solution by radiation. We optimized the composition, improved the properties using various additives, and evaluated the basic properties. As a result, significant improvements have been made in terms of temporal, spatial, and thermal stability, as well as dose response (sensitivity). At the same time, we worked on its clinical application and established a method for using it as a position detector for evaluating deep dose distribution and ensuring accuracy for X-rays and electron beams from medical accelerators. Furthermore, we created an optical CT device that is essential for three-dimensional dose distribution evaluation, and compared it with the treatment plan, demonstrating its usefulness.

Academic Significance and Societal Importance of the Research Achievements

三次元ゲル線量計,特にラジオクロミックゲル(RG)線量計の開発と臨床応用は,これまで欧米の研究が先行していたが,我々の開発した新規なRG線量計は既存のRG線量計とは異なる発色機構を用いており,国産のRG線量計である.我々のRG線量計では既存のRG線量計のいくつかの欠点が改善されており,再利用可能である点も画期的である.また,自作した汎用型光学CT装置と併せたシステムを構築し,RG線量計を実臨床へ応用する手法をいくつか確立した.これらの成果は今後の放射線治療における三次元線量分布評価法として臨床への普及にも大きく貢献できると考えている.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (51 results)

All 2024 2023 2022 2021 2020 Other

All Journal Article (13 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 10 results,  Open Access: 5 results) Presentation (35 results) (of which Int'l Joint Research: 11 results) Remarks (3 results)

  • [Journal Article] ゲル線量計による三次元線量評価2023

    • Author(s)
      小野薫、林慎一郎
    • Journal Title

      月刊インナービジョン2023年11月号

      Volume: 38 Pages: 34-36

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Verification of dose distribution in high dose-rate brachytherapy for cervical cancer using a normoxic <i>N</i>-vinylpyrrolidone polymer gel dosimeter2022

    • Author(s)
      Watanabe Yusuke、Maeyama Takuya、Mizukami Shinya、Tachibana Hidenobu、Terazaki Tsuyoshi、Takei Hideyuki、Muraishi Hiroshi、Gomi Tsutomu、Hayashi Shin-ichiro
    • Journal Title

      Journal of Radiation Research

      Volume: 63 Issue: 6 Pages: 838-848

    • DOI

      10.1093/jrr/rrac053

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ポリビニルアルコール-ヨウ素錯体の発色を利用したラジオクロミックゲル線量計の開発2022

    • Author(s)
      林慎一郎
    • Journal Title

      放射線化学

      Volume: 113 Pages: 5-11

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] ラジオクロミックゲル線量計の臨床応用 ―反復利用型PVA-Iゲル線量計を用いた3次元 Winston-Lutzテスト―2022

    • Author(s)
      小野薫,池田幸恵,藤野圭介,栗原凌佑,林慎一郎,赤木由紀夫,廣川裕
    • Journal Title

      放射線化学

      Volume: 113 Pages: 13-24

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] ポリビニルアルコール-ヨウ素錯体の発色を利用した3Dラジオクロミックゲル線量計の開発2022

    • Author(s)
      林慎一郎
    • Journal Title

      SIS Letters(ヨウ素学会誌)

      Volume: 23 Pages: 9-16

    • Related Report
      2022 Research-status Report
  • [Journal Article] 3次元ゲル線量計2022

    • Author(s)
      林慎一郎
    • Journal Title

      化学工業

      Volume: 74-2 Pages: 109-115

    • Related Report
      2022 Research-status Report
  • [Journal Article] Effects of PVA-GTA-I radiochromic gel dosimeter components on optical dose-response2022

    • Author(s)
      Hayashi Shin-ichiro、Ono Kaoru、Fujino Keisuke、Kurihara Ryosuke
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2167 Issue: 1 Pages: 012014-012014

    • DOI

      10.1088/1742-6596/2167/1/012014

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Measurement of spatial fluence distribution of neutrons and gamma rays using MAGAT-type gel detector doped with LiCl for BNCT at Kyoto University Reactor2022

    • Author(s)
      Tanaka Kenichi、Kajimoto Tsuyoshi、Mitsuyasu Aruma、Ito Yuto、Hayashi Shin-ichiro、Sakurai Yoshinori、Tanaka Hiroki、Takata Takushi、Bengua Gerard、Endo Satoru
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2167 Issue: 1 Pages: 012006-012006

    • DOI

      10.1088/1742-6596/2167/1/012006

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dosimetry in high-dose-rate brachytherapy with a radio-fluorogenic gel dosimeter2022

    • Author(s)
      Inoue K.、Watanabe Y.、Maeyama T.、Mizukami S.、Hayashi S.、Terazaki T.、Muraishi H.、Gomi T.、Shimono T.
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 2167 Issue: 1 Pages: 012032-012032

    • DOI

      10.1088/1742-6596/2167/1/012032

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Three-dimensional Winston?Lutz test using reusable polyvinyl alcohol-iodide (PVA-I) radiochromic gel dosimeter2021

    • Author(s)
      Ono Kaoru、Fujino Keisuke、Kurihara Ryosuke、Hayashi Shin-ichiro、Akagi Yukio、Hirokawa Yutaka
    • Journal Title

      Physics in Medicine & Biology

      Volume: 66 Issue: 20 Pages: 205001-205001

    • DOI

      10.1088/1361-6560/ac279d

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Influence of the components of a radiochromic PVA-Iodide gel dosimeter on the thermal and spatial stability2020

    • Author(s)
      Fujino Keisuke、Ono Kaoru、Hayashi Shin-ichiro、Yasuda Hiroshi、Akagi Yukio、Hirokawa Yutaka
    • Journal Title

      Radiation Measurements

      Volume: 135 Pages: 106338-106338

    • DOI

      10.1016/j.radmeas.2020.106338

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dosimetric impact of iodine content in a polyvinyl alcohol-iodide radiochromic gel dosimeter2020

    • Author(s)
      Ono Kaoru、Fujino Keisuke、Hayashi Shin-ichiro、Akagi Yukio、Hirokawa Yutaka
    • Journal Title

      Radiation Measurements

      Volume: 135 Pages: 106340-106340

    • DOI

      10.1016/j.radmeas.2020.106340

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Verification of dose distribution in high-dose-rate brachytherapy using a nanoclay-based radio-fluorogenic gel dosimeter2020

    • Author(s)
      Watanabe Yusuke、Maeyama Takuya、Mochizuki Anri、Mizukami Shinya、Hayashi Shin-ichiro、Terazaki Tsuyoshi、Muraishi Hiroshi、Takei Hideyuki、Gomi Tsutomu、Shimono Tetsunori
    • Journal Title

      Physics in Medicine & Biology

      Volume: 65 Issue: 17 Pages: 175008-175008

    • DOI

      10.1088/1361-6560/ab98d2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] ホウ素中性子捕捉療法のためのLCVミセルゲル線量計の中性子・ガンマ線照射特性評価2024

    • Author(s)
      成田亮介,林慎一郎,櫻井良憲
    • Organizer
      日本原子力学会 2024年春の年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 光学CT装置によるラジオクロミックゲル線量計計測システムの構築および3次元線量評価2024

    • Author(s)
      藤野圭介,栗原凌佑,小野薫,池田幸恵,林慎一郎,赤木由紀夫,廣川裕
    • Organizer
      第80回 日本放射線技術学会総会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Preliminary study for 3D dose distribution evaluation in neutron capture therapy using a PVA-GTA-I radiochromic gel dosimeter2024

    • Author(s)
      Shin-ichiro Hayashi, Ryosuke Narita, Yoshinori Sakurai
    • Organizer
      20th International Congress on Neutron Capture Therapy (ICNCT20)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A study on dose components discrimination estimation methods using micellar gel dosimeters for quality assurance in boron neutron capture therapy2024

    • Author(s)
      Ryosuke Narita, Yoshinori Sakurai, Shin-ichiro Hayashi
    • Organizer
      20th International Congress on Neutron Capture Therapy (ICNCT20)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 反復利用型PVA-Iゲル線量計による小照射野電子線のPDD計測2023

    • Author(s)
      栗原凌佑,小野薫,池田幸恵,藤野圭介,林慎一郎,赤木由紀夫,廣川裕
    • Organizer
      第79回 日本放射線技術学会総会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] BNCTにおける品質保証のための色素ゲル線量計の最適化検討2023

    • Author(s)
      成田亮介,林慎一郎,櫻井良憲
    • Organizer
      第19回 日本中性子捕捉療法学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Influence of the composition on the dose-response of PVA-GTA-I radiochromic gel dosimeter2023

    • Author(s)
      Shin-ichiro Hayashi, Ryosuke Kurihara, Keisuke Fujino, Sachie Ikeda, Kaoru Ono
    • Organizer
      17th International Congress of Radiation Research (ICRR2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 反復利用型PVA-Iゲル線量計を用いた3次元線量評価2023

    • Author(s)
      藤野圭介,林慎一郎,栗原凌佑,池田幸恵,小野薫,廣川裕
    • Organizer
      第26回 ヨウ素学会シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] BNCTにおける品質保証のためのミセルゲル線量計の最適化2023

    • Author(s)
      成田亮介,林慎一郎,櫻井良憲
    • Organizer
      第126回 日本医学物理学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 肝癌定位放射線治療計画におけるヨード造影剤の影響 ーPVA-Iゲル線量計を用いたPDD評価ー2023

    • Author(s)
      小野薫 ,池田幸恵,藤野圭介,栗原凌佑,林慎一郎,赤木由紀夫,廣川裕
    • Organizer
      第126回 日本医学物理学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] PVA-Iゲル線量計による3次元線量分布計測に影響する因子の検討2023

    • Author(s)
      栗原凌佑, 小野薫,池田幸恵,藤野圭介,林慎一郎,赤木由紀夫,廣川裕
    • Organizer
      第126回 日本医学物理学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 光学CT装置を用いたPVA-Iゲル線量計の反復利用性の検討2023

    • Author(s)
      姜裕錫,林慎一郎
    • Organizer
      第126回 日本医学物理学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Potential of a novel radiochromic gel dosimeter using a boric acid-crosslinked PVA-iodide complex2023

    • Author(s)
      Shin-ichiro Hayashi, Ryosuke Kurihara, Keisuke Fujino, Sachie Ikeda, Kaoru Ono
    • Organizer
      The 20th International Conference on Solid State Dosimetry (SSD20)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ホウ素中性子捕捉療法における品質保証に適したミセルゲル線量計の組成2023

    • Author(s)
      成田亮介,林慎一郎,櫻井良憲
    • Organizer
      第66回放射線化学討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ホウ素中性子捕捉療法の品質保証を目的としたミセルゲル線量計の組成最適化検討2023

    • Author(s)
      成田亮介,林慎一郎,櫻井良憲
    • Organizer
      日本放射線影響学会第66回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ミセルゲル線量計の光子線および中性子線に対するエネルギー依存性の評価2023

    • Author(s)
      成田亮介,林慎一郎,若林源一郎,櫻井良憲
    • Organizer
      日本保健物理学会第56回研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 多発転移性脳腫瘍に対する定位放射線照射のポリマーゲル3次元線量計測2022

    • Author(s)
      池田幸恵,小野薫,藤野圭介,栗原凌佑,林慎一郎,日置一成,宮沢正則,赤木由紀夫,廣川裕
    • Organizer
      第78回 日本放射線技術学会総会学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Improvement of the sensitivity of a PVA-iodide radiochromic gel dosimeter using a hydrated-electron scavenger2022

    • Author(s)
      Shin-ichiro Hayashi, Kaoru Ono, Ryosuke Kurihara, Keisuke Fujino
    • Organizer
      IUPESM World Congress on Medical Physics and Biomedical Engineering
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] PDD measurements of electron beams using a reusable radiochromic gel dosimeter2022

    • Author(s)
      Ryosuke Kurihara, Kaoru Ono, Sachie Ikeda, Keisuke Fujino, Shin-ichiro Hayashi, Yukio Akagi, Yutaka Hirokawa
    • Organizer
      第124回 日本医学物理学会学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 円筒型半導体アレイとポリマーゲル線量計によるノンコプラナーVMATの3次元線量検証2022

    • Author(s)
      池田幸恵,小野薫,藤野圭介,栗原凌佑,林慎一郎,宮沢正則,赤木由紀夫,廣川裕
    • Organizer
      日本放射線腫瘍学会第35回学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 反復利用型 PVA I ゲル線量計 による 3 次元線量評価 の有用性2022

    • Author(s)
      藤野圭介,小野薫,池田幸恵,栗原凌佑,林慎一郎,五東弘昭,宮沢正則,赤木 由紀夫,廣川裕
    • Organizer
      日本放射線腫瘍学会第35回学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Influence of the components of a PVA-GTA-I radiochromic gel dosimeter on the optical dose response2021

    • Author(s)
      Shin-ichiro Hayashi
    • Organizer
      11th International Conference on 3D and Advanced Dosimetry
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Measurement of spatial fluence distribution of neutrons and gamma rays using MAGAT-type gel detector doped with LiCl for BNCT at Kyoto University Reactor2021

    • Author(s)
      kenichi Tanaka
    • Organizer
      11th International Conference on 3D and Advanced Dosimetry
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Dosimetry in high-dose-rate brachytherapy with a radio-fluorogenic gel dosimeter2021

    • Author(s)
      K. Inoue
    • Organizer
      11th International Conference on 3D and Advanced Dosimetry
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] PVA-GTA-Iラジオクロミックゲル線量計を用いたBNCT照射場の2次元線質弁別評価に関する検討2021

    • Author(s)
      櫻井良憲
    • Organizer
      第17回日本中性子捕捉療法学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] MAGATゲルを用いた熱中性子およびγ線の弁別測定2021

    • Author(s)
      田中憲一
    • Organizer
      第17回日本中性子捕捉療法学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] A Study on 2D Component-Discrimination Estimation for BNCT Irradiation Field using Radiochromic Gel Dosimeter2021

    • Author(s)
      Yoshinori Sakurai
    • Organizer
      The 9th Korea-Japan Joint Meeting on Medical Physics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] アミロース-ヨウ素錯体を利用した3Dラジオクロミックゲル線量計の開発2021

    • Author(s)
      林慎一郎
    • Organizer
      第24回 ヨウ素学会シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] A study on 2D component-discrimination estimation for BNCT irradiation field using a PVA-GTA-I radiochromic gel dosimeter2021

    • Author(s)
      Yoshinori Sakurai
    • Organizer
      19th International Congress on Neutron Capture Therapy
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] BNCTにおけるPVA-GTA-Iゲル線量計を用いた2次元線質弁別評価に関する研究2021

    • Author(s)
      柿本 有貴、林 慎一郎、高田 卓志、田中 浩基、櫻井 良憲
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] How to make a PVA-I radiochromic gel dosimeter2020

    • Author(s)
      林慎一郎、小野薫、藤野圭介、木下佳祐、栗原凌佑
    • Organizer
      第119回日本医学物理学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] PDD measurements of electron beams with a reusable radiochromic gel dosimeter2020

    • Author(s)
      栗原凌佑、小野薫、藤野圭介、林慎一郎、赤木由紀夫、廣川裕
    • Organizer
      第119回日本医学物理学会学術大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Three-Dimensional Isocenter Verification for Real-Time Tumor-Tracking Radiotherapy System Using a Reusable PVA-I Radiochromic Gel Dosimeter2020

    • Author(s)
      K Ono, T Sera, T Shiinoki, S Hayashi, K Fujino, Y Akagi, Y Hirokawa
    • Organizer
      AAPM 2020 62th Annual Meeting & Exhibition
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] ヨウ素錯体を利用したラジオクロミックゲル線量計の可能性2020

    • Author(s)
      林慎一郎
    • Organizer
      第63回 放射線化学討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] PVA-I / B(OH)3; 色素ゲル線量計の線量応答特性と組成依存性の測定2020

    • Author(s)
      秋田純吾, 田中憲一, 林慎一郎, 光安歩真, 梶本剛, 遠藤暁
    • Organizer
      日本原子力学会中国・四国支部第14回研究発表会
    • Related Report
      2020 Research-status Report
  • [Remarks] 広島国際大学 DOSGEL group(仮)

    • URL

      https://hirokokushin.sakura.ne.jp/hr/dosgel/index-j.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] 広島国際大学 DOSGEL group

    • URL

      http://www.hirokoku-u.net/hr/dosgel/index-j.html

    • Related Report
      2023 Annual Research Report 2020 Research-status Report
  • [Remarks] 広島国際大学 DOSGEL group (兼 3Dゲル線量計研究会事務局)

    • URL

      http://www.hirokoku-u.net/hr/dosgel/index-j.html

    • Related Report
      2022 Research-status Report 2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi