期刊论文

中文

核电子学与探测技术

0258-0934

2023

43

06

1229-1235

10.3969/j.issn.0258-0934.2023.06.018

82260958:国家自然科学基金 Z-A20220892:广西壮族自治区卫生健康委员会自筹经费科研课题

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通过对MatriXX和EPID两款探测器矩阵物理性能进行测试研究,为用于临床肺癌旋转机架角二维剂量验证提供参考.通过加速器出束,分别对MatriXX和EPID的绝对剂量重复性、剂量率响应性能、角度响应、剂量线性进行测试,选取20例肺癌放射治疗计划采用MatriXX和EPID进行旋转机架角二维平面剂量验证,并分析结果.两款测量设备绝对剂量重复性、剂量率响应性能、剂量线性性能较好,测试结果偏差较小,MatriXX角度响应性能较差,在2％/2 mmi、3％/3 mm评判标准下,90°和270° γ通过率相对于0°时测量结果偏差近10％.对20例肺癌放疗计划剂量验证结果,在相同评判条件下,MatriXX比EPID计划验证γ通过率低10％左右.E...

This article conducts testing and research on the physical performance of MatriXX and EPID detector matrices,providing reference for two-dimensional dose verification of rotating rack angle in clinical lung cancer.The absolute dose repeatability,dose rate response performance,angle response,and dose linearity of MatriXX and EPID were tested using an accelerator beam output.Twenty lung cancer radiotherapy plans were selected to use MatriXX and EPID for two-dimensional dose validation of rotating gantry angles,and the results were analyzed.The ab...