摘要
目的 :采用蒙特卡罗方法计算γ射线在水体膜中的吸收剂量。方法 :根据γ光子与物质作用的原理 ,对γ光子与水的每一次相互作用进行抽样 ,然后以此建立粒子运输的数字模型 ,并编制计算机程序 ,模拟γ光子在水体模中运输过程 ,同时记录每次相互作用的能量沉积 ,并转化为吸收剂量。结果 :通过运行计算机程序 ,计算出两组代表意义的数据 ,并检验了算法的准确性。结论 :用蒙特卡罗方法计算γ射线在水体模中的吸收剂量是可行的。
Objective:To calculate the absorbed dose of the γ-ray in the water phantom by Monte Carlo method.Methods:The mathematics model of the particle transportation was built ,based on the sample of the interaction between γ photon and water according to the principle of interaction between γ photon and the material, and a computer procedure was organized to simulate the process of transportation for the γ photon in the water phantom and record the energy deposition in the interaction each time, which was converted to the absorbed dose in the end.Results:Two groups of representative data was worked out to check the accuracy of this method by running the computer program.Conclusions:It is feasible for Monte Carlo to calculate the absorbed dose of the γ-ray in the water phantom.
出处
《中国现代医学杂志》
CAS
CSCD
2003年第17期57-60,共4页
China Journal of Modern Medicine
关键词
蒙特罗方法
抽样
水体模
Monte Carlo Method
Sample
Water Phantom
