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Development of ultrahigh resolution radiaion imaging system

Research Project

Project/Area Number 18K19909
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 90:Biomedical engineering and related fields
Research InstitutionNagoya University

Principal Investigator

Yamamoto Seiichi  名古屋大学, 医学系研究科(保健), 教授 (00290768)

Project Period (FY) 2018-06-29 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywordsアルファ線 / 飛跡 / リアルタイム / 共晶体シンチレータ / 空間分解能 / 高感度CCDカメラ / テーパー型ファイバープレート / α線 / 内用療法 / イメージング / 超高分解能
Outline of Final Research Achievements

We developed an ultrahigh-resolution, real-time alpha-particle imaging system for observing the trajectories of alpha particles in a scintillator. The developed alpha-particle imaging system is made from a 1-micron-diameter fiber-structure scintillator plate that is optically coupled with the first of two sequentially connected tapered optical fiber plates. The output of the second, larger tapered optical fiber plate was imaged by an electron-multiplied (EM) cooled CCD camera. With our developed imaging system, we observed images of alpha particles having a spatial resolution of ~11 microns. We could also observe the trajectories of alpha particles with Bragg peaks for the angled incident alpha particles. We conclude that this imaging system, which can observe the trajectory of alpha particles in a fiber-structure scintillator, is promising for research on targeted alpha-particle therapy or alpha emitter detection at nuclear facilities.

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的成果は極めて大きい。アルファ線の飛跡をリアルタイムで画像化できる装置開発は世界初の成果である。また11μmのアルファ線に対する空間分解能は、リアルタイム放射線検出器としては世界最高分解能である。アルファ線のブラッグピーク画像をリアルタイム画像から得たのも世界初である。
開発したイメージング装置は、アルファ線内用療法のための、細胞から放出されるアルファ線の分布をリアルタイムで画像化することを可能にする。腫瘍細胞にアルファ線放出核種が集まっているかどうか、さらには細胞内小器官に集まっているかなどを実時間に知ることが可能になるものと期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (18 results)

All 2021 2020 2019 Other

All Journal Article (16 results) (of which Peer Reviewed: 10 results,  Open Access: 1 results) Remarks (2 results)

  • [Journal Article] Comparison of light outputs, decay times, and imaging performance of a ZnS(Ag) scintillator for alpha particles, beta particles, and gamma photons2021

    • Author(s)
      Yamamoto Seiichi、Tomita Hideki
    • Journal Title

      Applied Radiation and Isotopes

      Volume: 168 Pages: 109527-109527

    • DOI

      10.1016/j.apradiso.2020.109527

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Performance evaluation of YAlO3 scintillator plates with different Ce concentrations2021

    • Author(s)
      Nakanishi Kohei、Yamamoto Seiichi、Kamada Kei、Yoshikawa Akira
    • Journal Title

      Applied Radiation and Isotopes

      Volume: 168 Pages: 109483-109483

    • DOI

      10.1016/j.apradiso.2020.109483

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optical fiber-based ZnS(Ag) detector for selectively detecting alpha particles2021

    • Author(s)
      Yamamoto Seiichi、Aoki Ichio、Higashi Tatsuya
    • Journal Title

      Applied Radiation and Isotopes

      Volume: 169 Pages: 109495-109495

    • DOI

      10.1016/j.apradiso.2020.109495

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of a low-sensitivity high resolution YAP(Ce) scintillation camera system toward the real-time imaging of an 192Ir source during high-dose-rate brachytherapy2020

    • Author(s)
      Nagata J.、Yamamoto S.、Noguchi Y.、Nakaya T.、Okudaira K.、Kamada K.、Yoshikawa A.
    • Journal Title

      Journal of Instrumentation

      Volume: 15 Issue: 12 Pages: P12018-P12018

    • DOI

      10.1088/1748-0221/15/12/p12018

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of an ultrahigh-resolution radiation real-time imaging system to observe trajectory of alpha particles in a scintillator2020

    • Author(s)
      Yamamoto Seiichi、Hirano Yoshiyuki、Kamada Kei、Yoshikawa Akira
    • Journal Title

      Radiation Measurements

      Volume: 134 Pages: 106368-106368

    • DOI

      10.1016/j.radmeas.2020.106368

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Imaging of polarized components of Cerenkov light and luminescence of water during carbon‐ion irradiation2020

    • Author(s)
      Yamamoto Seiichi、Yabe Takuya、Akagi Takashi、Hirano Yoshiyuki
    • Journal Title

      Medical Physics

      Volume: 48 Issue: 1 Pages: 427-433

    • DOI

      10.1002/mp.14600

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Estimation of the three-dimensional (3D) dose distribution of electron beams from medical linear accelerator (LINAC) using plastic scintillator plate2019

    • Author(s)
      Horita Ryo、Yamamoto Seiichi、Yogo Katsunori、Hirano Yoshiyuki、Okudaira Kuniyasu、Kawabata Fumitaka、Nakaya Takayoshi、Komori Masataka、Oguchi Hiroshi
    • Journal Title

      Radiation Measurements

      Volume: 124 Pages: 103-108

    • DOI

      10.1016/j.radmeas.2019.04.002

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Three-dimensional (3D) dose distribution measurements of proton beam using a glass plate2019

    • Author(s)
      Horita Ryo、Yamamoto Seiichi、Yogo Katsunori、Komori Masataka、Toshito Toshiyuki
    • Journal Title

      Biomedical Physics & Engineering Express

      Volume: 5 Issue: 4 Pages: 045033-045033

    • DOI

      10.1088/2057-1976/ab169e

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of a YAP(Ce) camera for the imaging of secondary electron bremsstrahlung x-ray emitted during carbon-ion irradiation toward the use of clinical conditions2019

    • Author(s)
      Yamamoto Seiichi、Yamaguchi Mitsutaka、Akagi Takashi、Sasano Makoto、Kawachi Naoki
    • Journal Title

      Physics in Medicine & Biology

      Volume: 64 Issue: 13 Pages: 135019-135019

    • DOI

      10.1088/1361-6560/ab2072

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optical imaging for the characterization of radioactive carbon and oxygen ion beams2019

    • Author(s)
      Kang Han Gyu、Yamamoto Seiichi、Takyu Sodai、Nishikido Fumihiko、Mohammadi Akram、Horita Ryo、Sato Shinji、Yamaya Taiga
    • Journal Title

      Physics in Medicine & Biology

      Volume: 64 Issue: 11 Pages: 115009-115009

    • DOI

      10.1088/1361-6560/ab1ccf

    • Related Report
      2019 Research-status Report
  • [Journal Article] Investigation of the Relation of Decay Time Differences and $\alpha-\beta$ Ratios for Newly Developed Scintillators2019

    • Author(s)
      Yamamoto Seiichi、Kamada Kei、Yoshikawa Akira
    • Journal Title

      IEEE Transactions on Nuclear Science

      Volume: 66 Issue: 11 Pages: 2324-2328

    • DOI

      10.1109/tns.2019.2944891

    • Related Report
      2019 Research-status Report
  • [Journal Article] Performance evaluation for a radiation imaging detector using single-crystal GPS (Ce) plate2019

    • Author(s)
      Yamamoto S.、Ito T.、Takekawa S.、Suzuki Y.、Nagao K.、Anzai Y.、Ishibashi H.
    • Journal Title

      Journal of Instrumentation

      Volume: 14 Issue: 10 Pages: P10025-P10025

    • DOI

      10.1088/1748-0221/14/10/p10025

    • Related Report
      2019 Research-status Report
  • [Journal Article] Feasibility evaluation of a direct detection method of alpha particles in water using YGAG plate with pulse shape analysis2019

    • Author(s)
      Yamamoto S.、Nakanishi K.、Terazawa S.
    • Journal Title

      Journal of Instrumentation

      Volume: 14 Issue: 10 Pages: P10013-P10013

    • DOI

      10.1088/1748-0221/14/10/p10013

    • Related Report
      2019 Research-status Report
  • [Journal Article] Imaging of Ir-192 source using a high energy gamma camera for high-dose-rate brachytherapy2019

    • Author(s)
      Yamamoto Seiichi、Yogo Katsunori、Noguchi Yumiko、Nakaya Takayoshi、Okudaira Kuniyasu
    • Journal Title

      Radiation Measurements

      Volume: 126 Pages: 106128-106128

    • DOI

      10.1016/j.radmeas.2019.106128

    • Related Report
      2019 Research-status Report
  • [Journal Article] Development of a high resolution LaGPS imaging detector with pulse shape discrimination capability of different types of radiations2019

    • Author(s)
      Yamamoto Seiichi、Kamada Kei、Kurosawa Shunsuke、Yoshikawa Akira
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 922 Pages: 8-18

    • DOI

      10.1016/j.nima.2018.11.056

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] An ultrahigh spatial resolution radiation-imaging detector using 0.1?mm?×?0.1 mm pixelated GAGG plate combined with 1 mm channel size Si-PM array2019

    • Author(s)
      Yamamoto Seiichi、Kataoka Jun、Kamada Kei、Yoshikawa Akira
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 919 Pages: 125-133

    • DOI

      10.1016/j.nima.2018.12.002

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Remarks] 山本研究室ホームページ

    • URL

      http://s-yama.net/index.html

    • Related Report
      2020 Annual Research Report
  • [Remarks] 山本研究室の研究紹介

    • URL

      http://s-yama.net/index.html

    • Related Report
      2019 Research-status Report

URL: 

Published: 2018-07-25   Modified: 2022-01-27  

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