Mintchev M P, Bowes K L
Department of Surgery, University of Alberta, Edmonton, Canada.
Med Biol Eng Comput. 1996 May;34(3):244-8. doi: 10.1007/BF02520081.
Cutaneous recordings of gastric electrical activity (electrogastrography (EGG)) could become a valuable non-invasive tool for recognising gastric electrical abnormalities. Although signals obtained with internally implanted electrodes deliver quantitative information, this technique cannot be used for diagnostic purposes because of its invasive nature. On the other hand, the objectivity of electrogastrography is still in question. The aims of this work are to develop computer techniques for extracting quantitative information from digital electrogastrograms, and to evaluate quantitatively EGG recordings from healthy volunteers. The dynamics of all four EGG parameters are studied: amplitude, frequency, time shift between different channels, and waveform. Four separate two-dimensional computer plots are developed using specially designed digital signal-processing procedures. Each parameter is evaluated in a study of 20 healthy volunteers. Frequency is found to be the only EGG parameter that shows quantitative consistency and merit.
胃电活动的皮肤记录（胃电图（EGG））可能成为识别胃电异常的一种有价值的非侵入性工具。尽管通过内部植入电极获得的信号能提供定量信息，但由于其侵入性，该技术不能用于诊断目的。另一方面，胃电图的客观性仍存在疑问。这项工作的目的是开发从数字胃电图中提取定量信息的计算机技术，并对健康志愿者的胃电图记录进行定量评估。研究了所有四个胃电图参数的动态变化：幅度、频率、不同通道之间的时间偏移和波形。使用专门设计的数字信号处理程序绘制了四个单独的二维计算机图表。在对20名健康志愿者的研究中对每个参数进行了评估。发现频率是唯一显示出定量一致性和价值的胃电图参数。
