Development of Japanese polygon mesh-type human models for accurate exposure dose assessment

Sato, Kaoru   

In 2012, ICRP recommended the latest scientific knowledge on radiation protection for the stem cells. Body size affects exposure doses, so the differences in body sizes between Japanese and Caucasians must be considered in dose assessments. Previously, there were no adult Japanese human models incorporating the stem cell regions. Therefore, we developed polygon mesh-type human models of the average adult Japanese male (JPM) and female (JPF) to analyze exposure doses considering Japanese body characteristics. We have completed these models by defining stem cells within organs like the alimentary tracts, urinary bladder, and lens, using image processing. The JPM and JPF are the only human models that can evaluate exposure doses to organs and its stem cells, considering the body characteristics of the Japanese. They are expected to be useful for optimizing exposure management in the medical and nuclear fields. This paper provides an overview of the JPM and JPF.