title: [Study of analysis of the singularity of R-wave by using wavelet transform].
abstract: Singularity is a basic feature of biological signals. Based on the variations of wavelet transform modulus maxima in multi-scales, we studied the basic theorem for analyzing the singularity and proposed an algorithm for calculating lipschitz exponent. Then we applied the algorithm to calculate the singularity of R-wave in ECG. Our study found that the level of singularity of R-waves in ECG between the 10 arrhythm patients randomly chosen and the healthy persons was significantly different, with the level of singularity of R-wave of normal persons remarkably higher than that of arrhythmia patients.
authors.affiliation: Medical Engineering Support Center, Chinese PLA's General Hospital, Beijing 100853, China. wangwd301@126.com
authors.forename: Weidong
authors.initials: W
authors.lastname: Wang
authors.forename: Buqing
authors.initials: B
authors.lastname: Wang
authors.forename: Guangrong
authors.initials: G
authors.lastname: Liu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D001145:Arrhythmias, Cardiac / Q000503:physiopathology; D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012815:Signal Processing, Computer-Assisted; D058067:Wavelet Analysis; D055815:Young Adult