Title :
Extraction of new echo-Doppler diagnostic spectral parameters for detecting aortic stenosis
Author :
Cloutier, Guy ; Durand, L.-G. ; Langlois, Y.E. ; Latour, Y. ; Lemire, F. ; Essiambre, R. ; Phaneuf, D.C. ; Jarry, M. ; Solignac, A.
Author_Institution :
Biomed. Eng. Lab., Clinical Res. Inst. of Montreal, Que., Canada
Abstract :
Parameters extracted from normalized spectrograms obtained by using the apical and left parasternal windows have been investigated to characterize the blood flow disturbance below the aortic valve. The parameters proposed are based on the characterization of spectral broadening and on the evaluation of the power of the spectrograms in various frequency bands. Values for both normal and stenotic aortic valves are described and their usefulness in the quantitative evaluation of aortic valve obstruction is discussed.<>
Keywords :
Doppler effect; biomedical ultrasonics; haemodynamics; spectral analysis; aortic stenosis detection; apical window; blood flow disturbance; echo-Doppler diagnostic spectral parameters; frequency band; left parasternal window; medical ultrasonics; normalized spectrograms; spectral broadening characterisation;
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
DOI :
10.1109/IEMBS.1988.94493
