Preliminary study in the analysis of the severity of cardiac pathologies using the higher-order spectra on the heart-beats signals

Autor: Berraih, Sid Ahmed, Baakek, Yettou Nour Elhouda, Debbal, Sidi Mohammed El Amine
Zdroj: Polish Journal of Medical Physics And Engineering; March 2021, Vol. 27 Issue: 1 p73-85, 13p
Abstrakt: Phonocardiography is a technique for recording and interpreting the mechanical activity of the heart. The recordings generated by such a technique are called phonocardiograms (PCG). The PCG signals are acoustic waves revealing a wealth of clinical information about cardiac health. They enable doctors to better understand heart sounds when presented visually. Hence, multiple approaches have been proposed to analyze heart sounds based on PCG recordings. Due to the complexity and the high nonlinear nature of these signals, a computer-aided technique based on higher-order statistics (HOS) is employed, it is known to be an important tool since it takes into account the non-linearity of the PCG signals. This method also known as the bispectrum technique, can provide significant information to enhance the diagnosis for an accurate and objective interpretation of heart condition.
Databáze: Supplemental Index