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Proceedings Paper

Effect of decorrelation on butterfly search velocity estimator performance
Author(s): Stephen A. McAleavey; Kevin J. Parker
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Paper Abstract

The effect of signal decorrelation on the performance of the Butterfly Search velocity estimator is examined. An analytical approximation for the expected value of the Butterfly Search L(v) function is developed for three cases of interest. The approximations are verified against synthesized echo data. It is found that the peak value of the L(v) function is limited by the rate of signal decorrelation. The results show that improved performance may be obtained by processing and averaging subsets of echo ensembles, rather than applying the Butterfly Search to the entire ensemble simultaneously. For lower SNRs, processing the entire ensemble at once produces equivalent or better results than subset processing. Results from echo data obtained in-vitro are presented which confirm the simulations.

Paper Details

Date Published: 30 May 2001
PDF: 12 pages
Proc. SPIE 4325, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing, (30 May 2001); doi: 10.1117/12.428205
Show Author Affiliations
Stephen A. McAleavey, Univ. of Rochester (United States)
Kevin J. Parker, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 4325:
Medical Imaging 2001: Ultrasonic Imaging and Signal Processing
Michael F. Insana; K. Kirk Shung, Editor(s)

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