DocumentCode
2231287
Title
A fundamental limit on the performance of phase aberration correction and correlation based flow estimates in medical ultrasound
Author
Walker, W.F. ; Trahey, Gregg E.
Author_Institution
Dept. of Biomed. Eng., Duke Univ., Durham, NC
fYear
1993
fDate
31 Oct-3 Nov 1993
Firstpage
1149
Abstract
Cross correlation and similar operations are used for displacement (delay) estimation in medical ultrasound. We apply the Cramer-Rao Lower Bound to derive analytical expressions to predict the magnitude of errors in displacement estimation using radio frequency and detected data in both one and two dimensions. These expressions are verified by simulation and applied to realistic situations in phase aberration correction and flow estimation
Keywords
acoustic signal processing; biomedical ultrasonics; Cramer-Rao Lower Bound; cross correlation; delay estimation; displacement estimation; errors; flow; medical ultrasound; one dimension; performance limit; phase aberration; phase aberration correction/correlation based flow estimates; radio frequency; two dimensions; Biomedical imaging; Delay estimation; Jitter; Motion estimation; Phase estimation; Phase measurement; Radio frequency; Signal analysis; Strain measurement; Ultrasonic imaging;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1993. Proceedings., IEEE 1993
Conference_Location
Baltimore, MD
Print_ISBN
0-7803-2012-3
Type
conf
DOI
10.1109/ULTSYM.1993.339586
Filename
339586
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