Title :
Cost/benefit selection of spectral estimators for use with ultrasonic Doppler blood flow instruments
Author :
Ruano, M.G. ; Fish, Peter J.
Author_Institution :
Sch. of Electr. Eng. Sci., Univ. Coll. of North Wales, Bangor, UK
Abstract :
The work described is part of a research program aiming to increase the sensitivity to blood vessel disease detection using spectral analysis of Doppler shifted ultrasound scattered from blood by reducing the effects of the measurement procedure on the estimation of blood velocity and detection of flow disturbance. A criterion of selection of spectral estimation methods is described based on the accuracy of estimation of decisive signal parameters, under the constraint of low computational complexity. For parametric spectral estimators, this new cost/benefit criterion may also be used to select model order, leading to model orders significantly lower than those selected using accepted criteria
Keywords :
Doppler effect; biomedical equipment; biomedical measurement; biomedical ultrasonics; haemodynamics; spectral analysis; Doppler shifted ultrasound; blood velocity; blood vessel disease detection; cost/benefit criterion; flow disturbance detection; low computational complexity; select model order; signal parameters; spectral analysis; spectral estimation methods; spectral estimators; ultrasonic Doppler blood flow instruments; Bandwidth; Blood flow; Computational complexity; Computational modeling; Diseases; Doppler shift; Frequency estimation; Instruments; Parametric statistics; Ultrasonic imaging;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226570
