Graham B M, Adler A
School of Information Technology and Engineering (SITE), University of Ottawa, Canada.
Physiol Meas. 2007 Jul;28(7):S29-44. doi: 10.1088/0967-3334/28/7/S03. Epub 2007 Jun 26.
This paper investigates several configurations for placing electrodes on a 3D cylindrical medium to reconstruct 3D images using 16 electrode EIT equipment intended for use with a 2D adjacent drive protocol. Seven different electrode placement configurations are compared in terms of the following figures of merit: resolution, radial and vertical position error, image magnitude, immunity to noise, immunity to electrode placement errors, and qualitative evaluation of image artefacts. Results show that for ideal conditions, none of the configurations considered performed significantly better than the others. However, when noise and electrode placement errors were considered the planar electrode placement configuration (two rings of vertically aligned electrodes with electrodes placed sequentially in each ring) had the overall best performance. Based on these results, we recommend planar electrode placement configuration for 3D EIT lung imaging of the thorax.
本文研究了在三维圆柱形介质上放置电极的几种配置，以便使用适用于二维相邻驱动协议的16电极电阻抗断层成像（EIT）设备重建三维图像。从以下几个品质因数方面对七种不同的电极放置配置进行了比较：分辨率、径向和垂直位置误差、图像幅度、抗噪声能力、抗电极放置误差能力以及图像伪影的定性评估。结果表明，在理想条件下，所考虑的配置中没有一种比其他配置表现得明显更好。然而，当考虑噪声和电极放置误差时，平面电极放置配置（两圈垂直对齐的电极，且每圈中的电极依次放置）具有总体最佳性能。基于这些结果，我们推荐平面电极放置配置用于胸部的三维EIT肺部成像。
