A Voxel-Based Simulation Method of Human External Exposure Dose

Abstract

The invention provides a voxel-based body external irradiation dose simulation method. According to the method, 3dsMax software is used to establish a virtual human model with a skeleton animation; dose distribution data in a virtual nuclear radiation field is initialized; according to a body structure and a skeleton structure of a virtual human, a body voxel model is established; body modules areallocated, and weights of all the modules and a body effective dose calculation formula are defined; an interpolation method is utilized to calculate an instant exposure dose rate and an accumulateddose of the virtual human; a body exposure dose is calculated based on the skeleton animation; and all the modules perform parallel calculation. Through the method, voxelization is not directly performed on a three-dimensional model of the virtual human, the steps are easier and more convenient, the voxel model can move along with human skeletons, and real-time dose evaluation is realized.

Description

technical field [0001] The invention relates to a method for simulating the external radiation dose during the movement of a virtual human in a virtual nuclear radiation field. Background technique [0002] Decommissioning activities at nuclear facilities are highly radioactive. Therefore, it is necessary to simulate nuclear decommissioning activities through virtual simulation technology. During the virtual simulation process, the possible exposure dose of the workers is evaluated, which is used to formulate corresponding radiation protection measures. At present, the real-time external exposure dose assessment for workers involved in nuclear radiation hazards at home and abroad is mainly based on particle models, collision models, voxel models, and digital models. The dose simulation evaluation based on the particle model considers the worker as a particle for dose calculation, and the accuracy of this method is poor. The bounding box model is realized based on the coll...

AI Technical Summary

Problems solved by technology

The voxel model decomposes the human body into a large number of voxels, and uses voxels to represent human tissues and organs, so as to realize the calculation of human external radiation. many

The mathematical model uses basic geometry to describe various tissues and organs of the human body. The program occupies a small amount of memory and has high calculation efficiency, but it cannot dynamically calculate the exposure dose of the human body during exercise.

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