瓦里安加速器6MV X线的蒙特卡罗模拟  

Monte Carlo Simulation of 6MV X-Ray for Varian Accelerator

作　　者：王逸轩 朱琳[2] 孟皓宇 谭翔 李飞[2] 王学涛[2] WANG Yi-xuan;ZHU Lin;MENG Hao-yu;TAN Xiang;LI Fei;WANG Xue-tao(Haiyuan Department,Kunming Medical University,Yunnan Kunming 650106;Guangdong Provincial Hospital of TCM,Guangdong Guangzhou 510120)

机构地区：[1]昆明医科大学海源学院,云南昆明650106 [2]广东省中医院,广东广州510120

出　　处：《中国医疗器械信息》2021年第14期38-39,160,共3页China Medical Device Information

基　　金：教育部产学合作协同育人项目资助(项目名称:基于大数据的乳腺癌放疗靶区自动勾画系统开发与应用,项目编号:A201902119002)。

摘　　要：目的:通过比较电离室测量及蒙特卡罗计算结果,确定加速器治疗头的入射电子束参数。方法:用EGSnrc/BEAMnrc程序对Varian Clinac 23EX加速器6MV X线进行模拟,分析入射电子束参数对百分深度剂量和离轴比的影响。结果:电离室测量结果和蒙特卡罗计算结果一致性较好。结论:蒙特卡罗方法可用于加速器X射线的模拟,模拟结果可用于进一步的研究工作。Objective:The beam data is compared with those obtained from Monte Carlo(MC)simulation and measurement to determine the incident electron beam parameters of accelerator head.Methods:EGSnrc/BEAMnrc code is used to simulate 6MV X-ray of Varian Clinac 23EX accelerator,and the influence of incident electron beam parameters on percentage depth dose and off-axis ratio is analyzed.Results:The measurement results of ionization chamber are in good agreement with Monte Carlo calculation results.Conclusion:Monte Carlo method can be used to simulate the X-ray of accelerator,and the simulation results can be used for further research.

关 键 词：电离室测量 蒙特卡罗模拟 

分 类 号：TH774[机械工程—仪器科学与技术]