Improved modified moving average analysis of T-wave alternans using least squares-based curve fitting method  

作　　者：Xiang-Kui Wan Kang-Hui Yan Ang Li Ming-Hu Wu 

机构地区：[1]School of Electrical and Electronic Engineering Hubei University of Technology Wuhan 430068, P. R. China [2]School of Information Engineering Guangdong University of Technology Guangzhou 510006, P. R. China [3]School of Electrical and Electronic Engineering Hubei University of Technology Wuhan 430068, P. R. China

出　　处：《International Journal of Biomathematics》2014年第4期173-183,共11页生物数学学报（英文版）

摘　　要：T-wave alternans （TWA） in surface electrocardiograph （ECG） signal is considered a marker of abnormal ventricular function which may be associated with ventricular tachy- cardia. Several methods have been developed in recent years to evaluate the important feature. One such method is known as modified moving average （MMA） analysis, which performs well for different levels of TWA, but it is sensitive to the noise in T-waves. In this paper we propose an improved MMA algorithm, which adds a stage of T-wave curve fitting for the MMA method before intermediate averaging. The curve fitting is performed by means of least square method technique. Our assessment study demon- strates the improved performance.

关 键 词：ELECTROCARDIOGRAPH T-wave alternans modified moving average least squaresmethod curve fitting. 

分 类 号：TP271.61[自动化与计算机技术—检测技术与自动化装置] O212.1[自动化与计算机技术—控制科学与工程]