Authors
Mathieu Lemay, Jean-Marc Vesin, Adriaan Van Oosterom, Vincent Jacquemet, Lukas Kappenberger
Publication date
2007/2/20
Journal
IEEE Transactions on Biomedical Engineering
Volume
54
Issue
3
Pages
542-546
Publisher
IEEE
Description
Due to the much higher amplitude of the electrical activity of the ventricles in the surface electrocardiogram (ECG), its cancellation is crucial for the analysis and characterization of atrial fibrillation. In this paper, two different methods are proposed for this cancellation. The first one is an average beat subtraction type of method. Two sets of templates are created: one set for the ventricular depolarization waves and one for the ventricular repolarization waves. Next, spatial optimization (rotation and amplitude scaling) is applied to the QRS templates. The second method is a single beat method that cancels the ventricular involvement in each cardiac cycle in an independent manner. The estimation and cancellation of the ventricular repolarization is based on the concept of dominant T and U waves. Subsequently, the atrial activities during the ventricular depolarization intervals are estimated by a weighted sum of …
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M Lemay, JM Vesin, A Van Oosterom, V Jacquemet… - IEEE Transactions on Biomedical Engineering, 2007