基于形态学的T波交替散点图法的研究  

Research on the Poincare Mapping Method of T-wave Alternans Based on Morphology

作　　者：郭慧[1] 赵捷[1] 李菲[1] 李田田[1] 

机构地区：[1]山东师范大学物电学院,济南250014

出　　处：《生物医学工程学杂志》2013年第1期52-55,共4页Journal of Biomedical Engineering

基　　金：山东省自然科学基金资助项目(ZR2010M020);山东省级重点科学技术项目资助(2007GG10001018)

摘　　要：本文采用非线性动力学系统中的周期性散点图法来检测T波交替(TWA),即根据散点图的矢量角度指数(VAI)判断TWA是否存在。用美国MIT/BIH标准心律失常数据库和欧洲ST-T心电数据库进行仿真,对由散点图法和谱分析法所得VAI和Vtwa作曲线拟合和相关性分析,得到其相关系数γ=0.860 1,这表明该方法对TWA的检测具有很高的准确性,进而为TWA的检测提供了新方法。This paper introduces an algorithm for detecting T wave alternans （TWA） using Poincare mapping meth- od, which is a technique for nonlinear dynamic systems to display periodic behavior. Vector angle index （VAI） was used to determine the presence or absence of TWA. Adopting M1T/BIH Arrhythmia database and European ECG ST-T database to simulate, we used VAI via poincare mapping method for correlation analysis with V_twa by way of the spectral method. The cross-correlation coefficient between Vtwa and VAI is γ= 0. 860 1. The algorithm can i- dentify the absence and presence of TWA accurately and provide idea for further study of TWA.

关 键 词：T波交替 散点图法 谱分析法 矢量角度指数 

分 类 号：R540.41[医药卫生—心血管疾病] R318[医药卫生—内科学]