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Research on Dosimetry Characteristics of Alanine Dosimeter Used for the Therapy-level Dose Range
Author(s): DING Yan-qiu, LIN Min, WU Wei-ming
Pages: 135-
138
Year: 2006
Issue:
2
Journal: GUANGXI SCIENCES
Keyword: 丙氨酸剂量计; 辐射治疗水平; 剂量学; 性能;
Abstract: 研究自制的丙氨酸剂量计应用于辐射治疗水平吸收剂量测量的剂量测量重复性、剂量率依赖性、剂量响应线性.利用电子直线加速器产生的6MV Χ射线辐照丙氨酸剂量计,测得其剂量测量的重复性为2.6%(1σ);剂量率范围为1~6Gy/min时,剂量响应变化为1.9%(1σ);利用钴治疗机发射的γ射线,照射剂量范围为(1~10Gy),测得ESR响应值随吸收剂量变化的线性相关系数为0.9996.丙氨酸剂量计的合成标准不确定度为3.3%,能满足辐射治疗水平剂量测量的要求,但剂量测量的重复性有待改进.
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