Title :
Minimum variance method in spectra analysis of ultrasonic Doppler blood flow velocity signal
Author :
Kaluzynski, Krzysztof
Author_Institution :
Biomed. Eng. Group, Warsaw Tech. Univ., Poland
Abstract :
The minimum variance (MV) method is compared with the direct FFT method in application to the ultrasonic Doppler flow velocity signal. The MV results are better in terms of physical interpretation and properties of spectral parameters. The method is better suited for inferring velocity distribution on the basis of the Doppler spectrum and for stenosis detection
Keywords :
Doppler effect; biomedical ultrasonics; haemodynamics; spectral analysis; direct FFT method; haemodynamics; minimum variance method; spectra analysis; spectral parameters; stenosis detection; ultrasonic Doppler blood flow velocity signal; velocity distribution; Analysis of variance; Biomedical engineering; Biomedical signal processing; Blood flow; Carotid arteries; In vivo; Modems; Parameter estimation; Signal analysis; Testing;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95576
