A Method for Pretreatment and Character Extraction of Epicardial Signals Based on Template Matching
- VernacularTitle:基于模板匹配的心外膜电信号预处理与特征提取方法
- Author:
Tuo ZHOU
;
Cuiwei YANG
;
Zuxiang FANG
- Publication Type:Journal Article
- Keywords:
epicardial mapping;
atrial fibrillation;
template matching;
pretreatment;
feature extraction
- From:Space Medicine & Medical Engineering
2006;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore a method for real-time pretreatment and character extraction of epicardial signals and promote the research on the electrophysiological mechanism of atrial fibrillation (AF).Methods Firstly,an analysis was made to get the properties of epicardial signals. Then,a method based on template matching was used to extract atrial activities from epicardial signals. At last,the feature points of atrial activities could be recognized.Results The correctness of recognizing feature points of sinus rhythm and AF were 99.7% and 97.0% respectively. Furthermore,only 1~2 s were cost to compute a 10-second data record with this method.Conclusion The proposed method can extract crucial information about atrium depolarization from epicardial signals and is adequate for online analysis.
