胃电和胃阻抗信号的同步采集与分析系统  

A synchronous acquisition and analysis system of gastric electrogram and gastric impedance signal

作　　者：王伟[1] 任超世[1,2] 李章勇[1] 

机构地区：[1]重庆邮电大学生物信息学院,重庆400065 [2]中国医学科学院生物医学工程研究所,天津300192

出　　处：《微计算机信息》2009年第19期74-76,共3页Control & Automation

基　　金：基金申请人:任超世;项目名称:采用生物阻抗无创提取胃动力信息与评价方法研究;基金颁发部门:国家自然科学基金委员会(60471041)

摘　　要：利用胃电与胃收缩频率的相关性,可以评价与胃节律紊乱有关的疾病,但对由机械活动失常所引起的紊乱就不能做出准确诊断。本文基于ADuC834芯片完成了胃电与胃阻抗信号的同步采集和数据传输,并运用小波多分辨分析实现了信号的去噪和重构,不仅获得了常用的胃电信号,还同步获得了与胃机械活动相关的胃阻抗信号,这两者的相关性将为研究胃的复杂电-机活动机理提供分析依据。The gastric dysrhythmia can be evaluated and the gastric function disorder caused by mechanical behavior disorder can＇t be accurate diagnosted based on the relationship of EGG and gastric contraction frequency. In this paper, the acquisitionthe system based on ADuC834 successfully acquired synchronization EGG and bio-impedance information from body surface. Wavelet multi-res- olution analysis was employed to correctly separate EGG, gastric impedance signal, peristalsis, respiration and interference because they were all low-frequency signals. Then EGG and gastric impedance signal casued by gastric mechanical behavior were recon- structed. We can analyz complex course of electricity and mechanism of functional dyspepsia based on the relationship of EGG and gastric impedance.

关 键 词：胃阻抗 胃电 ADuC834 多分辨分析 

分 类 号：TN99[电子电信—信号与信息处理] R318[电子电信—信息与通信工程]