NDLI: Hybrid adaptive/nonadaptive beamforming for ultrasound imaging

Content Provider	IEEE Xplore Digital Library
Author	Albulayli, M. Rakhmatov, D.
Copyright Year	2013
Description	Author affiliation: ECE Dept., Univ. of Victoria, Victoria, BC, Canada (Albulayli, M.; Rakhmatov, D.)
Abstract	We propose and evaluate a simple yet effective technique of combining nonadaptive and adaptive beamforming methods aimed to achieve high quality of ultrasound images at low computational cost. Our hybrid beamformer automatically switches between nonadaptive and adaptive beamforming of input data vectors, based on the outcome of the comparison of the input coherence factor against a certain threshold. For illustrative purposes, we used the delay-and-sum (DAS) beamformer as an example of a nonadaptive method, while the Generalized Sidelobe Canceller (GSC) and Adaptive Single Snapshot Beamformer (ASSB) served as two examples of an adaptive method. We have applied our technique to simulated ultrasound images of a 12-point phantom and a point-scattering-cyst phantom, demonstrating substantial computational savings without a significant degradation in the image resolution and contrast, in comparison to the standard GSC-based or ASSB-based beamforming methods.
Starting Page	1061
Ending Page	1065
File Size	233684
Page Count	5
File Format	PDF
ISBN	9781479903566
ISSN	15206149
DOI	10.1109/ICASSP.2013.6637812
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Array signal processing Ultrasonic imaging Vectors Imaging Acoustics Coherence Arrays image quality ultrasonic imaging
Content Type	Text
Resource Type	Article

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