Development and validation of a voxel-based computational phantom of Halobatrachus didactylus (Toadfish) to study...

This paper describes the creation of a voxel-based dosimetric model of a toadfish (Halobatrachus didactylus) from available CT images in which 29 organs are identified and segmented using 3D Slicer software. To validate the present dosimetric model Specific Absorbed Fractions (SAFs) were calculated for ten vital organs as sources and all targets, for discrete energies of electrons and photons. Then, the obtained dosimetric coefficients were compared to those calculated in similar organs in a voxel-based phantom of a trout fish (Oncorhynchus mykiss). The results showed a general agreement between the comparative dosimetric data, highlighting the validity of our dosimetric model for Halobatrachus didactylus. We conclude that the current dosimetric fish model can be applied in future research to evaluate dosimetry calculations related to radiation exposure in regions surrounding the Fukushima accident site.