Document Detail


Analysis of simulated heart sounds by intrinsic mode functions.
MedLine Citation:
PMID:  17946142     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The mechanisms involved in the generation of heart sounds have always been of interest, mainly for diagnosis purposes. As a result, mathematical models have been proposed for first (S1) and second (S2) heart sounds and different efforts have been made to select the best signal processing tool to analyze them. Different frequency analysis techniques have been used to relate cardiac structure to the vibration they emit. In this work, we applied the empirical mode decomposition (EMD), a recently developed technique, for time-frequency (TF) analysis of heart sounds. EMD has shown interesting properties for biomedical signals related to nonlinear and non-stationary analysis. EMD is an adaptive decomposition since the extracted information is obtained directly from the signal without the use of kernels or mother waveforms. In this paper, EMD is first investigated in simulated scenarios through mathematical models for SI and S2 to validate its performance. Later, a real heart sound acquired over the thoracic surface of a healthy subject is analyzed. The work points out the advantage of EMD for this task.
Authors:
S Charleston-Villalobos; A T Aljama-Corrales; R González-Camarena
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  1     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2006  
Date Detail:
Created Date:  2007-10-23     Completed Date:  2008-03-13     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2848-51     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Algorithms*
Computer Simulation
Diagnosis, Computer-Assisted / methods*
Heart Auscultation / methods*
Humans
Models, Cardiovascular*
Reproducibility of Results
Sensitivity and Specificity
Sound Spectrography / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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