| 一种改进的动态电阻抗断层成像反投影算法 |
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| 引用本文： | 徐管鑫,何为,H.Singer.一种改进的动态电阻抗断层成像反投影算法[J].生物医学工程学杂志,2004,21(5):761-765. |
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| 作者姓名： | 徐管鑫 何为 H.Singer |
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| 作者单位： | 1. 重庆大学,电气工程学院,重庆,400044
2. TU Hambug-Harburg, Germany |
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| 基金项目： | 国家自然科学基金资助项目 ( 5 0 3 3 70 2 0 )，重庆大学教育部高电压与电工理论新技术重点实验室资助 |
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| 摘 要： | 介绍了一种改进的动态电阻抗断层成像等位线反投影算法 ,对等位线反投影算法中的反投影矩阵 B的计算方法进行了改进 ,用改进的等位线反投影算法实现了动态图像重建 ,并与传统等位线反投影算法重建图像进行比较。结果表明 ,改进的等位线反投影算法可以更好的对目标进行定位 ,而且速度快 ,重建图像分辨率也有所提高。
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| 关 键 词： | 动态 电阻抗断层成像 等位线反投影 重建图像 |
An Improved Back-projection Algorithm of Dynamic Electrical Impedance Tomography |
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| Xu Guanxin,He Wei,H.Singer.An Improved Back-projection Algorithm of Dynamic Electrical Impedance Tomography[J].Journal of Biomedical Engineering,2004,21(5):761-765. |
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| Authors: | Xu Guanxin He Wei HSinger |
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| Institution: | College of Electrical Engineering, Chongqing University, Chongqing 400044, China. |
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| Abstract: | In this paper, an improved back-projection algorithm of dynamic electrical impedance tomography (EIT) was described. The improved back-projection algorithm modified the computing method of back-projection matrix B. Dynamic reconstruction image was obtained by the improved algorithm, and it was compared to the image obtained by the traditional method of equi-potential back-projection. The results showed that the improved algorithm of equi-potential back-projection could locate the object's position in the field with higher precision, and its speed was very fast. It also could improve the resolution of the reconstructed image in some extent. |
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| Keywords: | Dynamic Electrical impedance tomography Equi-potential back-projection Reconstruction image |
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