基于面元模型的河蚌剂量转换系数的计算

Abstract

Abstract: A hybrid phantom of mussel has been developed for radiation protection of the environment. Based on the Polygon Mesh (PM) and non-uniform rational B-spline (NURBS) surfaces, the phantom was created from the same data set of CT images with open and closed shell to evaluate dose conversion coefficients (DCC). ¹³⁷Cs in the water for external exposure and ⁹⁰Sr in the organism for internal exposure were both simulated for the mussel in open and closed state by the Monte Carlo simulations. The results showed that, for external exposure, DCC of the mussel in the open state were larger than those of the closed state while in the case of internal exposure it was quite the contrary. It confirmed that deformation of the organs could cause different absorbed dose rates.

Key words: voxel phantom, hybrid phantom, Monte Carlo simulation, mussel, dose conversion coefficient

CLC Number:

R144.1

Li Yang, Li Jianguo, Wang Aijun. Hybrid phantom of mussel for calculation of dose conversion coefficients[J].RADIATION PROTECTION, 2017, 37(6): 465-471.

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Hybrid phantom of mussel for calculation of dose conversion coefficients

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