Abstract
VIP-Man is a whole-body anatomical model newly developed at Rensselaer fromthe high-resolution colour images of the National Library of Medicine's VisibleHuman Project. This paper summarizes the use of VIP-Man and the Monte Carlomethod to calculate specific absorbed fractions from internal electronemitters. A specially designed EGS4 user code, named EGS4-VLSI, was developedto use the extremely large number of image data contained in the VIP-Man.Monoenergetic and isotropic electron emitters with energies from 100 keV to4 MeV are considered to be uniformly distributed in 26 organs. This paperpresents, for the first time, results of internal electron exposures based on arealistic whole-body tomographic model. Because VIP-Man has many organs andtissues that were previously not well defined (or not available) in othermodels, the efforts at Rensselaer and elsewhere bring an unprecedentedopportunity to significantly improve the internal dosimetry.
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