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Open AccessArticle

A United Sign Coherence Factor Beamformer for Coherent Plane-Wave Compounding with Improved Contrast

1
Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230031, China
2
Suzhou Institute of Biomedical Engineering and Technology, Chines Academy of Sciences, Suzhou 215010, China
3
Suzhou Guoke Ultra Medical Technology Co., Ltd., Suzhou 215010, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(7), 2250; https://doi.org/10.3390/app10072250
Received: 21 February 2020 / Revised: 15 March 2020 / Accepted: 22 March 2020 / Published: 26 March 2020
(This article belongs to the Section Acoustics and Vibrations)
In this study, we present a united sign coherence factor beamformer for coherent plane-wave compounding (CPWC). CPWC is capable of reaching an image quality comparable to the conventional B-mode with a much higher frame rate. Conventional coherence factor (CF) based beamformers for CPWC are based on one-dimensional (1D) frameworks, either in the spatial coherence dimension or angular coherence dimension. Both 1D frameworks do not take into account the coherence information of the dimensions of each other. In order to take full advantage of the radio-frequency (RF) data, this paper proposes a united framework containing both spatial and angular information for CPWC. A united sign coherence factor beamformer (uSCF), which combines the conventional sign coherence factor (SCF) and the united framework, is introduced in the paper as well. The proposed beamformer is compared with the conventional 1D SCF beamformers (spatial and angular dimension beamformers) using simulation, phantom and in vivo studies. In the in vivo images, the proposed method improves the contrast ratio (CR) and generalized contrast-to-noise ratio (gCNR) by 197% and 20% over CPWC. Compared with other 1D methods, uSCF also shows an improved contrast and lateral resolution on all datasets. View Full-Text
Keywords: coherent plane-wave compounding (CPWC); spatial and angular coherence; united coherence coherent plane-wave compounding (CPWC); spatial and angular coherence; united coherence
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MDPI and ACS Style

Yang, C.; Jiao, Y.; Jiang, T.; Xu, Y.; Cui, Y. A United Sign Coherence Factor Beamformer for Coherent Plane-Wave Compounding with Improved Contrast. Appl. Sci. 2020, 10, 2250.

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