SNR Comparisons of Beamforming Strategies

Author

Liu, Jie ; Kim, Kang-Sik ; Insana, Michael F.

Author_Institution

Dept. of Bioeng., Illinois Univ., Urbana, IL

Volume

54

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

1010

Lastpage

1017

Abstract

This paper defines the echo signal-to-noise ratio (eSNR) for pulse-echo systems that adapts to the effects of shift-varying impulse responses, spatiotemporal coding, and various beamformers. Measurement techniques using point targets or random scattering media can be interrelated for a broad range of experimental conditions through the eSNR. The eSNR definitions are also illustrated by comparing a spatial matched filter (SMF) beamformer to conventional dynamic receive focusing methods to evaluate performance based on resolution arid sensitivity. Closed-form expressions are presented that predict eSNR gains from SMF approaches relative to other beamformers

Keywords

biomedical ultrasonics; matched filters; spatial filters; SNR; beamforming; dynamic receive focusing methods; echo signal-to-noise ratio; pulse-echo systems; shift-varying impulse responses; spatial matched filter beamformer; spatiotemporal coding; Acoustic scattering; Array signal processing; Filtering; Focusing; Matched filters; RF signals; Signal processing; Signal to noise ratio; Spatial resolution; Spatiotemporal phenomena; Algorithms; Image Enhancement; Image Interpretation, Computer-Assisted; Reproducibility of Results; Sensitivity and Specificity; Ultrasonography, Doppler, Pulsed;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2007.346

Filename

4225312