医用直线加速器的Monte Carlo模拟  

Monte Carlo Simulation for Medical Linac

作　　者：陈少文[1,2] 王学涛[1,3] 陈立新[4] 曹午飞[1] 唐强[1] 刘小伟[1] 

机构地区：[1]中山大学物理科学与工程技术学院,广东广州510275 [2]东莞理工学院电子工程学院,广东东莞523808 [3]广东省中医院,广东广州510120 [4]中山大学肿瘤防治中心,广东广州510060

出　　处：《核电子学与探测技术》2009年第2期328-331,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(10675175、10505033)资助

摘　　要：用EGSnrc/BEAMnrc程序对Varian 600C医用直线加速器进行模拟。通过模拟结果和测量结果相比较,确定加速器治疗头的入射电子束参数,并分析入射电子束参数对百分深度剂量和离轴比的影响、射野大小对百分深度剂量的影响。模拟结果和测量结果相当一致,模拟结果可用于进一步的研究工作。The Monte Carlo code EGSnrc/BEAMnrc was used to simulate the Varian 600C medical Linac. The parameters of the incidence electrons beam for this Linac had been derived by comparing the dose distribution between the results from Monte Carlo simulation and the data from measurement. The influence of the incidence electrons to the percent depth dosage （PDD） and the absorbed dose off axis ratio （OAR）, and the influence of the field size to the percent depth dose, were discussed. The simulation results are consistent with the measurement results, and can be used for the further research.

关 键 词：医用直线加速器 MONTE CARLO模拟 BEAMnrc 

分 类 号：R730.5[医药卫生—肿瘤]