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Dosimetry of secondary particles generated in therapeutic radiation fields

Research Project

Project/Area Number 25713047
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypePartial Multi-year Fund
Research Field Radiation science
Research InstitutionNational Institute of Radiological Sciences

Principal Investigator

Kodaira Satoshi  国立研究開発法人放射線医学総合研究所, 研究基盤センター, 主任研究員 (00434324)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2013: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords医療被ばく / 放射線治療 / 二次粒子 / CR-39
Outline of Final Research Achievements

We have measured the secondary particles generated by the nuclear interactions with matters in the therapeutic radiation such as X-ray, proton and carbon beams. Especially, we have established the angular correction method for evaluating the dose of secondary particles quantitatively. For example, we found that the proton-induced secondary particles contribute to 20% in dose equivalent for primary protons. The production cross section depends on the nuclear charge of primary ions. The cross section for carbon beam is about 25 times higher than proton beam. On the other hand, the particle fluence giving 1 Gy dose for carbon beam is about 1/25 lower than proton beam. Therefore, in the viewpoint of dosimetry, we confirmed that the dose contribution of secondary particles for carbon beam is about 1/5 - 1/6 lower than proton beam.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (13 results)

All 2016 2015 2014 Other

All Int'l Joint Research (3 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Acknowledgement Compliant: 2 results) Presentation (8 results) (of which Invited: 1 results)

  • [Int'l Joint Research] Oklahoma State University(米国)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Technische University Wien(オーストリア)

    • Related Report
      2015 Annual Research Report
  • [Int'l Joint Research] Institute of Biomedical Problem(ロシア連邦)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] On the use of CR-39 PNTD with AFM analysis in measuring proton-induced target fragmentation particles2015

    • Author(s)
      S. Kodaira, T. Konishi, H. Kitamura, M. Kurano, H. Kawashima, Y. Uchihori, T. Nishio, N. Yasuda, K. Ogura, L. Sihver, E.R. Benton
    • Journal Title

      Nucl. Instrum. Meth. B

      Volume: 349 Pages: 163-168

    • DOI

      10.1016/j.nimb.2015.02.052

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Measurement of the secondary neutron dose distribution from the LET spectrum of recoils using the CR-39 plastic nuclear track detector in 10 MV X-ray medical radiation fields2015

    • Author(s)
      T. Fujibuchi, S. Kodaira, F. Sawaguchi, Y. Abe, S. Obara, M. Yamaguchi, H. Kawashima, H. Kitamura, M. Kurano, Y. Uchihori, N. Yasuda, Y. Koguchi, M. Nakajima, N. Kitamura, T. Sato
    • Journal Title

      Nucl. Instrum. Meth. B

      Volume: 349 Pages: 239-245

    • DOI

      10.1016/j.nimb.2015.03.006

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 陽子・ヘリウムを成因とする標的核破砕二次粒子の宇宙放射線線量への寄与2016

    • Author(s)
      小平聡, 内堀幸夫, 北村尚, 川嶋元, 蔵野美恵子, 小倉紘一, 安田仲宏, Lembit Sihver, Eric Benton
    • Organizer
      第30回固体飛跡検出器研究会
    • Place of Presentation
      福井大学附属国際原子力工学研究所
    • Year and Date
      2016-03-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] CR-39と原子核乾板を用いた重イオンの核破砕反応の計測2016

    • Author(s)
      四之宮創, 小平聡, 森島邦博, 長谷部信行, 蔵野美恵子, 久下謙一
    • Organizer
      第30回固体飛跡検出器研究会
    • Place of Presentation
      福井大学附属国際原子力工学研究所
    • Year and Date
      2016-03-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] Dosimetry of therapeutic carbon beam and its fragments with CR-39 plastic nuclear track detectors2015

    • Author(s)
      S Kodaira, N. Matsufuji, T Saito, N. Hasebe, H Kitamura, Y Uchihori, H Kawashima, M. Kurano, O. Ploc, L Sihver
    • Organizer
      The 15th International Congress of Radiation Research
    • Place of Presentation
      国立京都国際会館
    • Year and Date
      2015-05-25
    • Related Report
      2015 Annual Research Report
  • [Presentation] Dosimetry of proton-induced target fragments with CR-39 PNTD and AFM2015

    • Author(s)
      S. Kodaira, T.Konishi, Y. Uchihori, H. Kitamura, M. Kurano, H. Kawashima, L. Sihver, Eric Benton
    • Organizer
      Space Radiation and Heavy Ions in Therapy Symposium 2015
    • Place of Presentation
      あべのハルカス
    • Year and Date
      2015-05-22
    • Related Report
      2015 Annual Research Report
  • [Presentation] CR-39を用いた自動飛跡追跡法による重イオンの核破砕反応断面積の測定2015

    • Author(s)
      花岡慶祐、小平聡、蔵野美恵子、川嶋元、長谷部信行
    • Organizer
      第29回固体飛跡検出器研究会
    • Place of Presentation
      福井大学
    • Year and Date
      2015-03-30 – 2015-03-31
    • Related Report
      2014 Annual Research Report
  • [Presentation] CR-39とAFMを用いた陽子線からの標的核破砕粒子の線量計測法2015

    • Author(s)
      小平聡, 小西輝昭, 北村尚, 内堀幸夫, 川嶋元, 蔵野美恵子, 西尾禎治, 安田仲宏, 小倉紘一, Lembit Sihver, Eric R. Benton
    • Organizer
      第29回固体飛跡検出器研究会
    • Place of Presentation
      福井大学
    • Year and Date
      2015-03-30
    • Related Report
      2014 Annual Research Report
  • [Presentation] CR-39を用いた炭素線とフラグメント粒子の線量計測2014

    • Author(s)
      小平聡, 松藤成弘, 北村尚, 内堀幸夫, 川嶋元, 蔵野美恵子, Ondrej Ploc, Lembit Sihver
    • Organizer
      第28回固体飛跡検出器(応用物理学会放射線分科会共催)
    • Place of Presentation
      神戸大学深江キャンパス
    • Related Report
      2013 Annual Research Report
  • [Presentation] Dosimetric measurement of secondary particles from therapeutic radiation beams2014

    • Author(s)
      Satoshi Kodaira
    • Organizer
      The 2nd Global Chinese Congress of Radiation Research
    • Place of Presentation
      Suzhou, China
    • Related Report
      2013 Annual Research Report
    • Invited

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Published: 2013-05-21   Modified: 2022-01-31  

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