Segmentation and identification of some pathological phonocardiogram signals using time-frequency analysis
- 1 January 2011
- journal article
- research article
- Published by Institution of Engineering and Technology (IET) in IET Signal Processing
- Vol. 5 (6), 527-537
- https://doi.org/10.1049/iet-spr.2010.0013
Abstract
Heart sounds that are multicomponent non-stationary signals characterise the normal phonocardiogram (PCG) signals and the pathological PCG signals. The time-frequency analysis is a powerful tool in the analysis of non-stationary signals especially for PCG signals. It permits detecting and characterising abnormal murmurs in the diagnosis of heart disease. In this study, the authors introduce a novel method based on time‐frequency analysis in conjunction with a threshold evaluated on Rényi entropy for the segmentation and the analysis of PCG signals. The method was applied to different sets of PCG signals: early aortic stenosis, late systolic aortic stenosis, pulmonary stenosis and mitral regurgitation. The analysis has been conducted on real biomedical data. Tests performed proved the ability of the method for segmentation between the main components and the pathological murmurs of the PCG signal. Also, the method permits elucidating and extracting useful features for diagnosis and pathological recognition.Keywords
This publication has 14 references indexed in Scilit:
- Time-frequency analysis of heart sound based on HHTPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- First Heart Sound Detection for Phonocardiogram Segmentation2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2005
- Detection and identification of heart sounds using homomorphic envelogram and self-organizing probabilistic modelPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Simplicity based gating of heart soundsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Identification of aortic stenosis disease using discrete wavelet packet analysisPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- Minimum entropy time-frequency distributionsIEEE Signal Processing Letters, 2004
- Adaptive RID kernels which minimize time-frequency uncertaintyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Measuring time-frequency information content using the Renyi entropiesIEEE Transactions on Information Theory, 2001
- Time-frequency analysis of heart murmurs. Part II: Optimisation of time-frequency representations and performance evaluation.Medical & Biological Engineering & Computing, 1997
- Phonocardiogram signal analysis: Techniques and performance comparisonJournal of Medical Engineering & Technology, 1993