A multifrequency serial EIT system.
A multifrequency serial EIT system.
复制标题
多频串行 EIT 系统。
DOI：
10.1088/0967-3334/17/4a/003
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发表时间：
1996
影响因子：
3.2
通讯作者：
J. Morucci
中科院分区：
文献类型：
--
作者：
N. Chauveau;B. Ayeva;B. Rigaud;J. Morucci
研制了一种多频（1 kHz-1 MHz）串联电阻抗成像系统.它基于16个有源电极，可扩展至32个。每个有源电极都可以编程用于电流驱动和测量注入电流或相邻电极之间的电压差，并包括校准设施。阻抗的真实的和虚部通过应用参数识别方法（扩展Prony）获得，但是其他技术也容易适应。使用谢菲尔德滤波反投影算法进行图像重建。特征频率图像正在开发中，应该是非常感兴趣的正常和肿瘤组织之间的区别。
A multifrequency (1 kHz-1 MHz) serial electrical impedance tomography (EIT) system has been developed. It is based on 16 active electrodes and can be extended up to 32. Each active electrode can be programmed for current driving and for measuring either the injected current or the voltage difference between adjacent electrodes, and includes calibration facilities. Real and imaginary parts of the impedance are obtained by applying a parametric identification method (extended Prony), but other techniques are easily adaptable. Image reconstruction is carried out using the Sheffield filtered back-projection algorithm. Characteristic frequency images are under development and should be of great interest to distinguish between normal and tumorous tissues.