Residual range distribution measured by heavy ion radiography

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著者

    • NISHIMURA Katsuyuki
    • Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
    • INADA Tetsuo
    • Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
    • SATOH Hidetoshi
    • Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
    • ABE Shinji
    • Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences
    • FUTAMI Yasuyuki
    • Research Center of Charged Particle Therapy, National Institute of Radiological Sciences
    • MATSUFUJI Naruhiro
    • Research Center of Charged Particle Therapy, National Institute of Radiological Sciences
    • KANAI Tatsuaki
    • Research Center of Charged Particle Therapy, National Institute of Radiological Sciences
    • KAWACHI Kiyomitsu
    • Research Center of Charged Particle Therapy, National Institute of Radiological Sciences
    • HIGASHI Akio
    • Changed Particle Treatment, Public Health Dept., Hyogo Prefectural Government
    • TAZAWA Shuichi
    • Research Center of Nuclear Science and Technologies, The University of Tokyo

抄録

The relationships of optical density of a heavy ion radiograph with residual range and with absorbed dose are discussed, and the experimentally obtained results of the residual range for the small animal tissue phantom are shown. It is found that the curve of optical density against PMMA equivalent thickness does not show a peak as seen in the depth dose distribution curve measured with an ionization chamber. This reflects the difference between the film and ionization chamber in their responses to high LET particles. The shapes of the curves of the optical density against the thickness of the range shifter are almost identical, but the amount of shift along the thickness differs depending on the density of the phantom tissues and corresponds to the difference of the residual range. Therefore the optical density curves against absorber thickness are suitable for estimating residual range of the heavy ions emitted from the downstream side of the phantom, pixel by pixel.

収録刊行物

  • 放射線医学物理  

    放射線医学物理 19(2), 108-113, 1999-06-30 

    Japan Society of Medical Physics

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各種コード

  • NII論文ID(NAID)
    10004472404
  • NII書誌ID(NCID)
    AA11137895
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09188010
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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