Voxel-based body external irradiation dose simulation method

A simulation method and external irradiation technology, which is applied in design optimization/simulation, image data processing, special data processing applications, etc., can solve problems such as excessive time consumption, small program memory usage, and inability to dynamically calculate the exposure dose. , to achieve the effect of fast calculation and simple steps

Active Publication Date: 2018-03-23
HARBIN ENG UNIV
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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 g...

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  • Voxel-based body external irradiation dose simulation method
  • Voxel-based body external irradiation dose simulation method
  • Voxel-based body external irradiation dose simulation method

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing example the present invention is described in further detail:

[0050]The invention belongs to the field of nuclear radiation safety simulation, and mainly calculates the external exposure dose of a virtual person in a simulated nuclear radiation environment. The invention includes: building a voxel model of the human body according to the human body structure and bone structure of the virtual person; assigning human body modules, defining the weight of each module and the effective dose calculation formula; using the interpolation method to calculate the instantaneous exposure dose rate and cumulative dose of the virtual person ; Human exposure dose calculation based on skeletal animation; Parallel calculation of each module.

[0051] The present invention adopts following technical scheme:

[0052] 1. Create a virtual human model with 3dsMax software.

[0053] Create a virtual human model in 3dsMax software, and make th...

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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...

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Application Information

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IPC IPC(8): G06F17/50G06T17/00
CPCG06F30/20G06T17/00
Inventor 刘永阔李梦堃彭敏俊杨立群
Owner HARBIN ENG UNIV
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