用蒙特卡罗积分方法计算近距离治疗源^(192)Ir的剂量角度分布  

Dose Distribution Calculation fo ^(192)Ir in Brachytherapy using Monte Carlo Method

作　　者：戴相昆[1] 王运来[1] 徐寿平[1] 王连元[1] 谢耩[1] 

机构地区：[1]解放军总医院放射治疗科,北京100853

出　　处：《中国医学物理学杂志》2009年第2期1067-1071,共5页Chinese Journal of Medical Physics

摘　　要：目的:计算192Ir吸收剂量率随角度的变化以及吸收剂量随径向距离的变化。方法:根据三维希弗(Sievert)剂量积分公式,利用蒙特卡罗积分方法计算了microSelectron-HDR192Ir放射源的剂量角度分布。结果:根据计算结果得到了吸收剂量随角度变化以及吸收剂量变化,并将计算结果和其他结果进行比较,结果发现是一致的。结论:蒙特卡罗积分方法计算192Ir放射源的剂量角度分布方法简单,易于实现,结果可靠。Objective： Absorbed dose vs polar angle and radial distance were calculated. Methods： Based on Sievert Integration, absorbed dose vs polar angle and radial distance ofmicroSelectron-HDR 192Ir were calculated using Monte Carlo method. Results： We could know absored dose vs polar angle and radial distance of microSelectron- HDR 192Ir ,and the calculated results were compared with others, they were in good agreement. Conclusions： Monte carlo method for calculating absored dose vs polar angle and radial distance of microSelectron-HDR 192Ir was a simple and reliable method.

关 键 词：蒙特卡罗方法 希弗积分 剂量分布 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]