Shape characterization of atrial fibrillation using time-frequency analysis
Stridh, Martin; Sörnmo, Leif (2002). Shape characterization of atrial fibrillation using time-frequency analysis Computers in Cardiology, 29,, 17 - 20. Computers in Cardiology 2002. Memphis, TN, United States: IEEE - Institute of Electrical and Electronics Engineers Inc.
Conference Proceeding/Paper
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Published
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English
Authors:
Stridh, Martin
;
Sörnmo, Leif
Department:
Department of Electrical and Information Technology
Abstract:
A new method for characterization of atrial fibrillation in the surface ECG is presented which is based on a time-frequency distribution of the QRST-cancelled signal. With the present method, information regarding temporal variations in fibrillation frequency and waveform shape is extracted and investigated. The method is evaluated on a database including 182 recordings (obtained during resting conditions) from patients diagnosed with atrial fibrillation. The results show that a high fibrillation frequency often is associated with a sinusoidal shape whereas a low frequency is more associated with a sawtooth-like shape.
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