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Study on Distribution of ~(125)I Seed Source Dose Field

He Jiaheng Zhang Huaming WangJing Ma Zongping(Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,Mianyang,621900)  
Absorbed dose and distribution of dose fieldin bodyfrom125I brachytherapyseed source are calculated by usingthe methodology presentedinthe AAPMTG-43,and measured bythe method of autoradiography.Boththe theoretical calculation andthe experimental measurement are consistent.It shows that the dosefromseed source concentrates basically within short-distance range with prompt attenuation within 1 km of source location.
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