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《Journal of Chongqing Normal University(Natural Science)》 2018-04
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Magnetic Induction Tomography of Simulation Image Reconstruction Based on Filtered Back Projection Algorithm

LUO Haijun;PAN Haitao;WEN Kaixu;LIAO Yong;Chongqing Key Laboratory of Photo-Electric Functional Materials,College of Physics and Electronic Engineering,Chongqing Normal University;  
[Purposes]A set of Helmholtz coils is used as the excitation source.The uniform distribution of excitation magnetic field can be generated in the imaging region.This is helpful to improve the calculation of the sensitivity matrix of the imaging algorithm.[Methods]The system model consists of background object,foreign body,Helmholtz coil and 20 detection coils.Using filtered back projection algorithm to reconstruct the image,the influence of the position and volume of foreign objects on the reconstructed image is studied.Through three parameters(correlation coefficient,Normalization mean square distance criterion,Normalization mean absolute distance criterion)objective analysis.[Findings]When the disturbance body is near the edge,the correlation degree of the image is 54.009,and the location accuracy is less than 3 mm.When the volume of disturbance body is large,the correlation of image is71.340.[Conclusions]The results show that the closer the disturbance body is to the edge or the larger the volume,the better the quality of reconstructed image,and the three parameters are optimal.
【Fund】: 国家自然科学基金(No.51507023;No.11647098);; 重庆市科学技术委员会基础和前沿研究项目(No.CSTC2016JCYJA0920);; 重庆市教育委员会科学技术研究项目(No.KJ1703063)
【CateGory Index】: TP391.41
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