Dose-rate dependence of PAGAT polymer gel dosimeter evaluated using X-ray CT scanner

Dose-rate dependence of PAGAT polymer gel dosimeter evaluated using X-ray CT scanner
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使用 X 射线 CT 扫描仪评估 PAGAT 聚合物凝胶剂量计的剂量率依赖性

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发表时间:
2010
期刊:
影响因子:
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通讯作者:
D. Kumar
D. Kumar
中科院分区:
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文献类型:
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作者:
P. Sellakumar;E. Samuel;D. Kumar

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近年来,聚合物凝胶剂量计的x射线CT成像已被应用于直接测量三维剂量分布。本文以x射线CT扫描仪为评价工具,研究了PAGAT聚合物凝胶剂量计对不同剂量率的响应关系。在实验台上制备常压PAGAT聚合物凝胶,并以0.5 ~ 5 Gy/min不同剂量率辐照。照射后的剂量计样品用x射线CT扫描仪按照适当的扫描方案进行成像。结果表明,本研究中研究的PAGAT凝胶剂量计制剂具有最小的剂量率依赖性,在所研究的剂量率区间内,剂量敏感性的变化量为2%。
In recent years, X-ray CT imaging of polymer gel dosimeter has been applied to direct measurement of 3D dose distributions. This work presents the dependence of PAGAT polymer gel dosimeter response to different beam dose rate using X-ray CT scanner as an evaluation tool. The normoxic PAGAT polymer gel was prepared on bench top and irradiated to different doses at different dose-rate ranging from 0.5 to 5 Gy/min. After irradiation the dosimeter samples were imaged with X-ray CT scanner using appropriate scanning protocol. The results showed that PAGAT gel dosimeter formulations investigated in this study has the smallest dose rate dependence and the change in dose sensitivity amounts to 2 % over the dose rate interval studied.
DOI: 10.1016/s0360-3016(97)00146-6
发表时间: 1997-07-15
影响因子: 7
作者:
Ibbott, GS;Maryanski, MJ;Gore, JC
通讯作者: Gore, JC