According to dose parameters calculation formula of seed source recommended by AAPM TG43U1
125I-103Pd 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)