放射線治療領域の線量測定におけるポリマーゲル線量計の有用性の評価 Investigations on the Performance of Polymer Gel Dosimeter for Radiation Therapy

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Gel dosimeters are sensitive chemical dosimeters that aim at measuring the dose in three dimensions(3D). This study aims to evaluate the performance of a commercially available BANG<SUP>®</SUP> polymer gel. BANG<SUP>®</SUP> gels were irradiated using 6MV photon beams from 0.5Gy to 60Gy. The magnetic resonance(MR)spin-spin relaxation rate(R<SUB>2</SUB>=1/T<SUB>2</SUB>) of the protons indicates dose response and has a linear relationship to dose. The dose response curve by BANG<SUP>®</SUP> gel appeared approximately linear over the 0.5Gy and 20Gy region. The slope of the dose-R<SUB>2</SUB> curve is 0.9s<SUP>−1</SUP>Gy<SUP>−1</SUP>, and the relative dose distribution can be reproduced with an overall uncertainty of about 2%. R<SUB>2</SUB> was found to increase with increasing time after irradiation. BANG<SUP>®</SUP> gels are of comparable quality to MOSFET or PLD in terms of overall dosimetric accuracy and have the advantage of measuring continuous, cumulative 3D dose distributions.

収録刊行物

  • Radioisotopes  

    Radioisotopes 57(3), 183-188, 2008-03-15 

    Japan Radioisotope Association

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各種コード

  • NII論文ID(NAID)
    10021071513
  • NII書誌ID(NCID)
    AN00351589
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    00338303
  • NDL 記事登録ID
    9421909
  • NDL 雑誌分類
    ZM35(科学技術--物理学) // ZN36(科学技術--原子力工学・工業) // ZP2(科学技術--化学・化学工業--物理化学) // ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z15-20
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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