BNCT物理剂量Monte Carlo程序系统——MCDB及算法  

BNCT dosimetry Monte Carlo code system—MCDB and its algorithm

作　　者：邓力[1] 李刚[1] 陈朝斌[1] 叶涛[1] 张本爱[1] 张连贵[2] 

机构地区：[1]北京应用物理与计算数学研究所计算物理实验室,北京100088 [2]Capture科技有限公司,北京100037

出　　处：《清华大学学报（自然科学版）》2007年第z1期901-906,共6页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金联合基金资助项目(10576006)

摘　　要：硼中子俘获治疗(BNCT,boron neutron capture therapy)规划软件系统MCDB(Monte Carlo dosimetry in brain),包括医学前处理、Monte Carlo物理剂量计算和后处理.采用中心点方法确定网格的材料和密度,并自动生成Monte Carlo输入文件,MCDB借鉴并发展了一套网格几何下的快速粒子径迹算法,取得了与MCNP程序一致的剂量计算结果,计算速度较MCNP程序提高2.7～3.5倍.MCDB可进行并行计算,具有线性加速比,能够满足BNCT临床对计算时间和精度的要求.The treatment planning system MCDB(Monte Carlo dosimetry in brain) is developed for boron neutron capture therapy(BNCT).The system consists of a medical pre-processor,a Monte Carlo dose calculation,and a post-processor.The center point method is used to determine the material and density in each mesh.The Monte Carlo input file is automatically produced.In addition,a fast tracking algorithm was developed voxel model in MCDB.The doses agree well with MCNP.The MCDB is faster by a factor of 2.7-3.5 with respect to the MCNP in computational speed.On the other hand,MCDB code system can do parallel computation with linear speedup.The clinical requirement can be satisfied in precision and computational time.

关 键 词：BNCT(boron neutron CAPTURE therapy) MCDB(Monte Carlo DOSIMETRY in brain) 物理剂量 快速径迹算法 临床要求 中心点方法 

分 类 号：O571.51[理学—粒子物理与原子核物理]