蒙特卡罗程序MCNP、EGSnrc、DPM剂量计算比较研究  

Comparisons between Monte Carlo codes： MCNP, EGSnrc and DPM in radiotherapy dose calculation

作　　者：林辉[1] 宋钢[2] 赵攀[2] 程梦云[2] 李国丽[1] 汤正道[2] 吴爱东[2] 黄群英[2] 吴宜灿[2] 

机构地区：[1]合肥工业大学理学院,安徽230069 [2]中科院等离子体物理研究所

出　　处：《中华放射医学与防护杂志》2007年第5期473-476,共4页Chinese Journal of Radiological Medicine and Protection

基　　金：国家“973”计划项目（2006CB708307）;安徽省自然科学基金项目（070413081）;合肥工业大学校科学研究发展基金项目（071002F）;博士学位专项资助基金项目共同资助.

摘　　要：目的 验证3个蒙特卡罗程序MCNP、EGSnrc、DPM计算结果的一致性问题。方法基于简单均匀及非均匀模型和复杂临床头部实例模型，对3个蒙特卡罗程序MCNP、EGSnrc、DPM的模型建模、计算结果、计算时间进行了比较研究。结果尽管3个程序在粒子输运原理、模拟参数设置、几何描述模型以及材料截面数据等方面存在不同，但是计算结果仍符合很好。结论3个蒙特卡罗程序计算复杂模型具有相当的可靠性；简单快速蒙特卡罗程序DPM具有明显的优势。Objective To validate the calculated result consistency of three Monte Carlo codes MCNP, EGSnrc and DPM. Methods A homogeneous model, an inhomogeneous model and a clinic head case were simulated using Monte Carlo codes MCNP, EGSnrc, DPM to study and compare their model modeling, calculation result and calculation time. Results It is shown that, despite there are differences in particle transport principle, modeling parameter setting, geometry description and material cross data between them, their results still accord with each other very well. Conclusions These three Monte Carlo codes are very consistent in calculating complex 3-D clinic head case, and DPM shows much more distinct superiority than others.

关 键 词：蒙特卡罗程序 模型建模 计算结果 计算时间 

分 类 号：R686[医药卫生—骨科学]