Study on Accurate External Radiation Dose Assessment Method Based on Voxel Model

Worker’s radiation dose assessment in radiation environment is an important aspect of radiation protection research. Accordting to the inhomogeneity of the radiation field and difference of organs radiation-sensitive, it is necessary for accurate assessment of the radiation dose of workers. Based on Chinese high-precision radiation virtual human model Rad-HUMAN developed by FDS team, an accurate human dose assessment method was developed. The results show that the voxel-based organs dose assessment method can achieve precise organ-level dose compared with traditional methods. At present, the method has been integrated into the nuclear and radiation safety simulation system RVIS, originally developed by FDS team.