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| 一种单源电流激励方法的电阻抗成像仿真及实验 | |
| 引用本文： | 帅万钧,史学涛,尤富生,付峰,刘锐岗,董秀珍. 一种单源电流激励方法的电阻抗成像仿真及实验[J]. 仪器仪表学报, 2008, 29(11) |
| 作者姓名： | 帅万钧 史学涛 尤富生 付峰 刘锐岗 董秀珍 |
| 作者单位： | 1. 第四军医大学生物医学工程系,西安,710032;解放军总医院第一附属医院医学工程科,北京,100037 2. 第四军医大学生物医学工程系,西安,710032 |
| 基金项目： | 国家自然科学基金重点项目(50337020);;国家科技支撑计划项目(2006BAI03A14)资助项目 |
| 摘 要： | 为电阻抗断层成像技术的实际应用选择一种较优的电流激励方法,本文研究了一种单电流源两电极对向激励方法。通过计算机仿真、物理模型实验和初步的动物实验,结合电阻抗成像的反投影算法,与传统的邻近电流激励的电阻抗成像进行比较研究,并分析图像质量、定位误差以及重构误差。结果表明,与邻近激励相比,基于对向激励方法的电阻抗成像的抗噪性能较好。因此在临床较强噪声环境下,对向激励方法更适合于电阻抗成像的实际应用。 |
| 关 键 词： | 电阻抗断层成像 电流激励 仿真 动物实验 |
Simulation and experiment of electrical impedance tomography with current excitation methods |
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| Shuai Wanjun,Shi Xuemo,You Fusheng,Fu Feng,Liu Ruigang,Dong Xiuzhen. Simulation and experiment of electrical impedance tomography with current excitation methods[J]. Chinese Journal of Scientific Instrument, 2008, 29(11) | |
| Authors: | Shuai Wanjun Shi Xuemo You Fusheng Fu Feng Liu Ruigang Dong Xiuzhen |
| Affiliation: | 1;2;1 Department of Biomedical Engineering;Fourth Military Medical University;Xi'an 710032;China;2 Department of Medical Engineering;First Affiliated Hospital;General Hospital of PLA;Beijing 100037;China |
| Abstract: | To choose a better current excitation method for electrical impedance tomography(EIT)in practical ap- plications,polar excitation,a method of single current excitation with pairs of electrodes in opposite position,was studied.Combined with back-projection algorithm of EIT,a comparative study was made on the polar excitation and traditional adjacent excitation through computer simulation,phantom experiments and animal experiments.The im- age quality,location accuracy and reconstruction error were all analyze... |
| Keywords: | electrical impedance tomography current excitation simulation animal experiment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |