Title :
On the Efficient Estimation of Blood Velocities
Author :
Zhang, Zhuo ; Jakobsson, Andreas ; Macleod, Malcolm D. ; Chambers, Jonathon A.
Author_Institution :
Cardiff Sch. of Eng., Cardiff Univ.
Abstract :
Pulsed wave (PW) Doppler ultrasound systems are commonly used to examine blood flow dynamics and the technique plays a very important role in numerous diagnostic applications. Commonly, narrow-band PW systems estimate the blood velocity using an autocorrelation-based estimator. Herein, we examine a recently proposed hybrid frequency estimator, and via extensive numerical simulations using simulated blood scatterers show the achievable performance gain of this method as compared to the traditional approach
Keywords :
Doppler measurement; biomedical ultrasonics; blood flow measurement; autocorrelation; blood flow dynamics; blood velocities; hybrid frequency estimator; pulsed wave Doppler ultrasound systems; simulated blood scatterers; Autocorrelation; Blood flow; Frequency estimation; Narrowband; Numerical simulation; Performance gain; Phase estimation; Scattering; Signal to noise ratio; Ultrasonic imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616227
