Study of T-wave End Detection with Geometric Method
10.3969/j.issn.1005-202X.2010.02.013
- VernacularTitle:基于几何算法的T波终点检测研究
- Author:
Juan WANG
;
Zhongchao HUANG
;
Zhengchun LIU
- Publication Type:Journal Article
- Keywords:
T-wave end;
wavelet transforming;
geometrical method;
detection interval
- From:
Chinese Journal of Medical Physics
2010;27(2):1751-1754
- CountryChina
- Language:Chinese
-
Abstract:
Purpose: To realize the detection of T-wave end with an efficient and accurate method. Methods: R-wave was lo-cated using wavelet transforming, and then the T-wave detection interval was identified accttrately by avoiding the influence of heart rate and P-wave. In addition, T-wave peaks were determined referring to the modulus maxima in the interval. Based on these, the T-wave end was located with a simple and practical geometrical method, which was applied for the evaluation of QT database. Results: The positioning capability of the above-mentioned method reached to (-0.35225±18.5869) ms which was comparable or even better than those manual annotations from QT database by cardiologists. Conclusions: The experimental results showed that our algorithm for T-wave end detection is robust to noise, baseline drift and waveform morphological varia-tions, and easy to calculate and to realize.
