Application of average adult Japanese voxel phantoms to evaluation of photon specific absorbed fractions

Sato, Kaoru   ; Manabe, Kentaro   ; Endo, Akira   

Average adult Japanese male (JM-103) and female (JF-103) voxel phantoms have been developed by modifying the previously constructed JM and JF phantoms at JAEA. The phantoms have the following new features: (1) The heights and weights were adjusted to the Japanese averages; (2) The organ and tissue masses were adjusted to the Japanese averages within 10%; (3) Several organs and tissues were newly modeled for dose assessments based on tissue weighting factors of the 2007 Recommendations of ICRP. Photon SAFs of JM-103 and JF-103 phantoms were calculated, and were compared with those of other adult Japanese phantoms developed at JAEA. It was found that SAFs calculated using these phantoms were strongly dependent on the ogan masses. Therefore, it was concluded that SAFs of JM-103 and JF-103 represent those of average adult Japanese and that the two phantoms are applied to dose assessment for adult Japanese on the basis of the 2007 Recommendations.