Time-frequency and time-scale techniques for the classification of native and bioprosthetic heart valve sounds

P M Bentley; P M Grant; J T McDonnell

doi:10.1109/10.650366

Time-frequency and time-scale techniques for the classification of native and bioprosthetic heart valve sounds

IEEE Trans Biomed Eng. 1998 Jan;45(1):125-8. doi: 10.1109/10.650366.

Authors

P M Bentley¹, P M Grant, J T McDonnell

Affiliation

¹ Nokia R&D, Camberley, U.K.

PMID: 9444847
DOI: 10.1109/10.650366

Abstract

The determination of diagnostic features in recorded heart sounds was investigated with Carpentier-Edwards (CE) bioprosthetic valves. Morphological features, extracted using the Choi-Williams distribution, achieved between 96 and 61% correct classification. The time-scale wavelet-transform feature set achieved 100% correct classification with native valve populations, and 87% with the CE replacements.

MeSH terms

Aortic Valve / physiology
Bioprosthesis*
Fourier Analysis
Heart Rate
Heart Sounds*
Heart Valve Prosthesis*
Heart Valves
Humans
Mitral Valve / physiology
Prosthesis Failure
Reference Values
Signal Processing, Computer-Assisted*
Time Factors