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In this paper, virtual simulation was taken as an auxiliary tool for radiation protection, dose assessment. So radiation protection using virtual reality was taken as a research subject. A simple voxel modeling for virtual human was proposed. Based on the voxel model, dose assessment and visualization methods for virtual human in radiation environment were proposed. The parallel technology contributed to dose assessment in real-time. Based on dose assessment and visualization methods, a radiation protection method using virtual simulation was developed for the preparation of working in radiation environment. These validation tests demonstrate these methods make it possible to plan for the exposure dose to workers in radiation environment using virtual simulation. [ABSTRACT FROM AUTHOR]

This paper proposes a sampling-based method (SBM) for planning minimum dose path navigation for workers in nuclear facilities. To simulate and avoid obstacles, they were approximated by a combination of basic geometries and detected with the aid of virtual reality. To obtain an optimized walking path with minimum dose without considering the pre-designed road networks, a sampling-based method that utilizes the rapidly exploring random tree star (RRT*) algorithm, applicable in both continuous and discrete radiation fields, was proposed and implemented. The performance of this method was evaluated by simulating walk paths and estimating their radiation dose rates in a hypothetical nuclear facility, and the simulation results were compared with those derived from Dijsktra's algorithm under various radioactive environments. [ABSTRACT FROM AUTHOR]

Walking path-planning technology can be taken as a radiation protection measure to reduce radiation exposure to workers in radiation environment, and to guarantee work order and efficiency. Considering the nuclear facilities scene can be dynamic and changeable, we designed a dynamic minimum dose walking path-searching method based on the static minimum dose walking path-planning method earlier, and built path-planning simulation platform for nuclear radiation environment with virtual reality technology to plan walking path and virtual simulation. [ABSTRACT FROM AUTHOR]