Kee W C, Kingma Y J, Mintchev M P, Bowes K L
Department of Electrical Engineering, University of Alberta, Edmonton, Canada.
Ann Biomed Eng. 1996 Mar-Apr;24(2):328-32. doi: 10.1007/BF02667359.
Impedance electrogastrography (IE) is a noninvasive method to assess gastric contractile activity. This indirect method uses a four-terminal impedance measuring method to determine impedance variations of the gastric region of the torso. These variations can be related to changes in the stomach shape and, therefore, to gastric contractions. Because the impedance variations are very small, the placement of the measuring electrodes on the skin is critical. In this study, a three-dimensional resistor model consisting of 4,466 resistors was used to simulate the human torso. The model was implemented on a personal computer, and the experimentally obtained optimal electrode locations were found to be superior to the commonly used ones. Measurements of volunteers confirmed these findings.
阻抗胃电图（IE）是一种评估胃收缩活动的非侵入性方法。这种间接方法采用四端阻抗测量法来确定躯干胃区域的阻抗变化。这些变化可能与胃形状的改变有关，进而与胃收缩有关。由于阻抗变化非常小，测量电极在皮肤上的放置至关重要。在本研究中，使用了一个由4466个电阻组成的三维电阻模型来模拟人体躯干。该模型在个人计算机上实现，实验获得的最佳电极位置被发现优于常用位置。志愿者的测量结果证实了这些发现。
