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《Radiation Protection》 2008-01
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THE METHOD OF MULTI-ENERGY GAMMA RAYS TO RECTIFY LINEAR ATTENUATION COEFFICIENT IN IMAGE RECONSTRUCTION OF TOMOGRAPHIC GAMMA RAY SCANNING

Weng Wenqing1 Wang Dezhong1 Zhang Yong2 Liu Cheng1 Yang Yongliang2(1.Shanghai Jiaotong University,Shanghai,200240;2.Qinshan Nuclear Power Company,Zhejiang Haiyan,314300)  
Multi-energy method to rectify the linear attenuation coefficients in transmitted image reconstruction by tomographic gamma ray scanning was preliminarily explored.The gamma ray linear attenuation coefficients for different energies were calculated using Monte Carlo method for 18 different kinds of materials.The relationship between ray linear attenuation coefficient and energy was fitted for given material and density,so as to reconstruct transmitted image for different energies.
【Fund】: 国家自然科学基金资助项目(项目编号:10675084)
【CateGory Index】: TL81
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