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  • Title: An algorithm for robust and efficient location of T-wave ends in electrocardiograms.
    Author: Zhang Q, Manriquez AI, Médigue C, Papelier Y, Sorine M.
    Journal: IEEE Trans Biomed Eng; 2006 Dec; 53(12 Pt 1):2544-52. PubMed ID: 17153212.
    Abstract:
    The purpose of this paper is to propose a new algorithm for T-wave end location in electrocardiograms, mainly through the computation of an indicator related to the area covered by the T-wave curve. Based on simple assumptions, essentially on the concavity of the T-wave form, it is formally proved that the maximum of the computed indicator inside each cardiac cycle coincides with the T-wave end. Moreover, the algorithm is robust to acquisition noise, to wave form morphological variations and to baseline wander. It is also computationally very simple: the main computation can be implemented as a simple finite impulse response filter. When evaluated with the PhysioNet QT database in terms of the mean and the standard deviation of the T-wave end location errors, the proposed algorithm outperforms the other algorithms evaluated with the same database, according to the most recent available publications up to our knowledge.
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