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动态电阻抗断层成像反投影算法的仿真研究
引用本文:汤孟兴.动态电阻抗断层成像反投影算法的仿真研究[J].第四军医大学学报,1997,18(1):42-44.
作者姓名:汤孟兴
作者单位:第四军医大学生物医学工程系医电工程教研室!西安710033,第四军医大学生物医学工程系医电工程教研室!西安710033,第四军医大学生物医学工程系医电工程教研室!西安710033,第四军医大学生物医学工程系医电工程教研室!西安710033,第四军医大学生物医学工程系医电工程教研室!西安71
基金项目:九五军队基金课题No.96M108
摘    要:在计算机上建立动态电阻抗断层成像仿真系统。其中包括;建立模仿人体躯干的计算机有限元模型,实现模型的电场数值计算,并实现了以反投影技术为基础的两种动态图像重建算法,得到的初步的成像结果表明:反投影法对目标定位准确,速度快,但对于目标在远离电极的位置,重构误差相对大,且对噪声敏感。

关 键 词:电阻抗断层成像  仿真

Simulation research on dynamic electrical impedance tomography algorithm based on back-projection technique
Tang Mengxing,Dong Xiuzhen,Qin Mingxin,Wang Zhimin,Fu Feng,Shi Xuetao.Simulation research on dynamic electrical impedance tomography algorithm based on back-projection technique[J].Journal of the Fourth Military Medical University,1997,18(1):42-44.
Authors:Tang Mengxing  Dong Xiuzhen  Qin Mingxin  Wang Zhimin  Fu Feng  Shi Xuetao
Institution:Tang Mengxing,Dong Xiuzhen,Qin Mingxin,Wang Zhimin,Fu Feng,Shi Xuetao Department of Medical Electronic Engineering,Faculty of Biomedical Engineering,Fourth Military Medical University,Xi'an 710033
Abstract:A dynamic electrical impedance tomography (EIT) simulation system is presented here. The system has functions as the following: establishing the finite elements mesh model simulating the human body, implementing the numerical computation of the electrical field, and implementing two image reconstruction algorithm based on the back-projection technique. Some preliminary results are abtained. It is found that the algorithm based on back-projection has advantages of precise locating, high speed despite of some reconstruction errors. Finally, the method of improvement is discussed.
Keywords:dynamic electrical impedance tomography reconstruction algorithm simulation  
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