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Primary application investigation of dose verification using measured bremsstrahlung X-ray spectra of 6 MV medical linear accelerator
Author(s): ZHANG Songbai, ZHAO Hongbin, HUANG Zuozeng, ZHANG Huaizuo, HU Jiachen, HAN Shukui, BAO Shanglian
Pages: 200-
202,234
Year: 2003
Issue:
4
Journal: CHINESE JOURNAL OF MEDICAL PHYSICS
Keyword: 韧致辐射谱; 衰减法测量; PDD; OAR; MC模拟计算; 医用电子直线加速器;
Abstract: 本研究工作用实验测量的北京医疗器械研究所生产的6 MV电子直线加速器X射线谱作为输入数据,计算加速器水箱测量的基本数据PDD和OAR曲线并和实验测量的相应曲线进行比较.这里的X射线能谱是经过Monte Carlo程序EGS4的模拟计算结果验证过的.从比较的结果看,无论能谱测量、Monte Carlo模拟结果,还是通过PDD和OAR曲线的测量和计算,都证明把衰减法测量的X射线能谱作为对未知头部结构的加速器进行放疗计划验证的技术路线是可行的.
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