  The specific absorbed fractions (SAF) for self- and cross-irradiation are
effective tools for the internal dose estimation of inhalation and ingestion
intakes of radionuclides. A set of SAFs of photon and electron were calculated
using the Rad-HUMAN phantom, a computational voxel phantom of Chinese adult
female and created using the color photographic image of the Chinese Visible
Human (CVH) data set. The model can represent most of Chinese adult female
anatomical characteristics and can be taken as an individual phantom to
investigate the difference of internal dose with Caucasians. In this study, the
emission of mono-energetic photons and electrons of 10keV to 4MeV energy were
calculated using the Monte Carlo particle transport calculation code MCNP.
Results were compared with the values from ICRP reference and ORNL models. The
results showed that SAF from Rad-HUMAN have the similar trends but larger than
those from the other two models. The differences were due to the racial and
anatomical differences in organ mass and inter-organ distance. The SAFs based
on the Rad-HUMAN phantom provide an accurate and reliable data for internal
radiation dose calculations for Chinese female.
