Table of Contents
ISRN Cardiology
Volume 2012, Article ID 258769, 9 pages
Research Article

A Method for Ventricular Late Potentials Detection Using Time-Frequency Representation and Wavelet Denoising

Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, Via E. Orabona, 4 70125 Bari, Italy

Received 21 March 2012; Accepted 24 June 2012

Academic Editors: S. Gielen, T. Ohe, and M. Takahashi

Copyright © 2012 Matteo Gadaleta and Agostino Giorgio. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This study proposes a method for ventricular late potentials (VLPs) detection using time-frequency representation and wavelet denoising in high-resolution electrocardiography (HRECG). The analysis is performed both with the signal averaged electrocardiography (SAECG) and in real time. A comparison between the temporal and the time-frequency analysis is also reported. In the first analysis the standard parameters QRSd, LAS40, and RMS40 were used; in the second normalized energy in time-frequency domain was calculated. The algorithm was tested adding artificial VLPs to real ECGs.