Electrical Bioimpedance Method to Measure Gastric Motility Function
An electrical bioimpedance method to measure gastric motility function has developed. The method combines impedance gastric motility (IGM) signal with synchronous EGG measurement to extract gastric motility information of both electrical and mechanical activities of stomach and to investigate the complex course of gastric motility, including its rhythm, transmission, gastric emptying and the influences of them. An experiment device of the method has set up and some primary validation experiments of gastric motility measurement, such as compare tests of gastric motility activity for different period of time, some medicine effect test on gastric motility are executed. In the method wavelet transform is adopted to separate the IGM and EGG signals from breath and heart activity signals. By the means of energy and frequency spectrum analysis technique, the signals IGM and EGG can be classified according to the dominant power and dominant frequency. Some indexes such as rhythms of EGG and IGM, signal power spectrum and dynamic spectrum, the rates of rhythm and power for the normal EGG and IGM and so on can also be calculated. The results of the primary experiments suggest that the method has the good development and application prospect for the measurement and evaluate gastric motility function.
electrical bioimpedance synchronous EGG gastric motility measurement wavelet transform
Deng Juan Zhao Shu Sha Hong Wang Yan Ren Chaoshi Li zhangyong
Institute of Biomedical Engineering Chinese Academy of Medical Sciences & PUMC Tianjin, China Bioinformation College Chongqing University of Posts and Telecommunications Chongqing, China
国际会议
上海
英文
616-619
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）