Resumo

WONG, Sara et al. Evaluación de tres algoritmos de segmentación del intervalo RTEVALUATION OF THREE SEGMENTATION ALGORITHMS IN THE RT INTERVAL. uct [online]. 2008, vol.12, n.46, pp.05-12. ISSN 1316-4821.

Three automatics methods for the extraction of RT intervals are compared: the algorithm based on a derivate filter, the algorithm based on wavelets decomposition and the algorithm based on T wave modelization. The evaluation was carried on computer-generated and on real ECG signals. In the first evaluation, a synthetic electrocardiogram was contaminated with four types of noise in four conditions of Signal to Noise Ratio (SNR) (10, 15, 20 and 25 dB), in the second evaluation the algorithm’s results were compared with the annotations of two experts. The achieved performance shows a satisfying behavior of these approaches in favorable conditions of SNR. Nevertheless an increase of RT beat-to-beat variability induced by the artifacts was observed.

Palavras-chave : ECG; RT Interval; Segmentation; Algorithms; Signal Processing; T Wave.