Construction of adult Japanese polygon human phantoms for radiation dose assessment

Sato, Kaoru   ; Furuta, Takuya   ; Takahashi, Fumiaki  

We previously constructed average adult Japanese voxel phantoms (male: JM-103, female: JF-103) and others with various body sizes for application to dose assessment against persons with Japanese physiques. Generally, voxel phantom is not practical tool for dose assessment under various posture conditions, because of long construction term and difficulty of organ deformation. Thus, we are now constructing adult Japanese polygon male (JPM) and female (JPF) phantoms by modifying JM-103 and JF-103. In construction of JPM and JPF, the following processing were performed: (1) extraction of organ surface from JM-103 and JF-103, (2) smoothing organ surface, (3) adjustment of mass, shape and location, (4) multilayering of constructed polygon. Masses of most organs in JPM or JPF agreed with adult Japanese averages within 5%. In future, we will develop the limb operation technique for JPM and JPF. JPM and JPF with the new technique will be used for dose assessment against persons with various postures.