摘要
根据AAPM TG43U1推荐的种子源剂量参数计算公式,得到125I-103Pd复合种子源剂量参数计算公式,并且推广到n种放射性核素复合种子源剂量参数计算公式。使用蒙特卡罗方法计算125I-103Pd复合种子源的剂量率常数、径向剂量函数和各向异性函数的数值,对径向剂量函数和各向异性函数进行拟合,得到经验公式。使用单一源125I的参数计算结果和相关数据进行了比较。得到单一源125I的剂量率常数为0.959(cGy.h–1.U–1),与AAPM TG43U1中一种相类似的种子源6711(AH)的推荐值相差0.6093%。
According to dose parameters calculation formula of seed source recommended by AAPM TG43U1, 125I-1~3pd seed source dose parameters calculation formula and a variety of radionuclides composite seed source of dose parameters calculation formula can be obtain. Dose rate constant, radial dose function and anisotropy function of 125I-103pd composite seed source are calculated by Monte-Carlo method, Empiric equations are obtained for radial dose function and anisotropy function by curve fitting. Comparisons with the relative data recommend by AAPM are performed. For the single source, the deviation of dose rate constant is 0.959 （cGy·h-1·U-1）, and with 0.6093% from the AAPM.
出处
《核技术》
CAS
CSCD
北大核心
2013年第1期20-25,共6页
Nuclear Techniques
