DocumentCode
3405490
Title
Analysis of diastolic heart sounds before and after angioplasty
Author
Akay, M. ; Bauer, M. ; Semmlow, J.L. ; Welkowitz, W. ; Kostis, J.
Author_Institution
Dept. of Biomed. Eng., Rutgers Univ., Piscataway, NJ, USA
fYear
1988
fDate
4-7 Nov. 1988
Firstpage
257
Abstract
The frequency spectra of diastolic heart sounds are compared before and after angioplastic surgery. Since the low-level sounds associated with partially occluded coronary arteries will be contaminated with considerable background noise, traditional FFT analysis may not produce an accurate frequency spectrum. Eigenvector methods have been selected to generate the frequency spectra because of their higher resolution, particularly in the presence of noise. In all cases a marked decrease in high frequency spectral components was observed following angioplasty.<>
Keywords
bioacoustics; biomedical measurement; cardiology; eigenvalues and eigenfunctions; patient diagnosis; spectral analysis; surgery; FFT analysis; angioplasty; diastolic heart sounds; eigenvectors; fast Fourier transforms; heart sounds frequency spectra; noise; partially occluded coronary arteries; patient diagnosis; surgery;
fLanguage
English
Publisher
ieee
Conference_Titel
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location
New Orleans, LA, USA
Print_ISBN
0-7803-0785-2
Type
conf
DOI
10.1109/IEMBS.1988.94505
Filename
94505
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