Comparison of absorbed fractions of electrons and photons using three kinds of computational phantoms of rat

Tianwu Xie; Guozhi Zhang; Yun Li; Qian Liu
July 2010
Applied Physics Letters;7/19/2010, Vol. 97 Issue 3, p033702
Academic Journal
Rats have been widely used in radiopharmaceutics researches, making it reasonable to develop fine structured computational models for rat internal dose investigation. In this work, we developed three existing types of computational phantoms based on the same data set of rat, simulated photon and electron particles transport using Monte Carlo method and calculated absorbed fractions for organs. We further compared the dose discrepancies of these three types of phantoms in internal dosimetry and found the stylized phantom might cause an underestimation of the self-absorbed S-factors. The developed phantoms will contribute to the application of computational phantoms in dosimetry studies.


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