AN EFFICIENT AND ROBUST TECHNIQUE OF T WAVE DELINEATION IN ELECTROCARDIOGRAM

Yogendra Narain Singh, P. Gupta

Abstract

This study presented an efficient and robust method for the automatic delineation of T wave in the single-lead electrocardiogram. The method attained optimum performance using the fusion of delineation results obtained from a pair of new approaches. The first approach utilizes the advantage of time derivative and determines T wave ends using derivative curve analysis. The effect of local noise on the ECG signal is seized using a nonderivative approach which performs T wave delineation using the analysis of its waveform curvature toward the ends. Using the assumption that beginning and end of T wave exhibit the convex shape, this approach determines minimum radius of curvature of the convex regions at both ends. It is formally shown that the time instance corresponding to minimum radius of curvature coincides with T wave ends. The delineation results obtained from both the approaches are fused to achieve the optimum performance. The delineator attained a detection sensitivity of 99.9%, positive predictivity of 99.1% and an accuracy of 99.01% over the first lead of physionet QT database (20 records of 1, 000 beats each). The delineation errors are found well within the referenced intercardiologist observations, especially for T wave end. The mean error and standard deviation are found smaller than 10 ms which outperformed in comparison to other published results.

References

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Paper Citation


in Harvard Style

Narain Singh Y. and Gupta P. (2009). AN EFFICIENT AND ROBUST TECHNIQUE OF T WAVE DELINEATION IN ELECTROCARDIOGRAM . In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009) ISBN 978-989-8111-65-4, pages 146-154. DOI: 10.5220/0001548401460154


in Bibtex Style

@conference{biosignals09,
author={Yogendra Narain Singh and P. Gupta},
title={AN EFFICIENT AND ROBUST TECHNIQUE OF T WAVE DELINEATION IN ELECTROCARDIOGRAM},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)},
year={2009},
pages={146-154},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001548401460154},
isbn={978-989-8111-65-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2009)
TI - AN EFFICIENT AND ROBUST TECHNIQUE OF T WAVE DELINEATION IN ELECTROCARDIOGRAM
SN - 978-989-8111-65-4
AU - Narain Singh Y.
AU - Gupta P.
PY - 2009
SP - 146
EP - 154
DO - 10.5220/0001548401460154