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The beamforming performance has a large impact on image quality in ultrasound imaging. Previously, several adaptive weighting factors including coherence factor (CF) and generalized coherence factor (GCF) have been proposed to improved image resolution and contrast. In this paper, we propose a new adaptive weighting factor for ultrasound imaging, which is called signal mean-to-standard-deviation factor...
Recently, short-lag spatial coherence (SLSC) imaging has been widely studied to improve image contrast and contrast-to-noise ratio (CNR) in ultrasound imaging. Nevertheless, SLSC is unable to provide a good imaging resolution. Eigenspace-based minimum variance (ESBMV) beamformer was previously devised to promote imaging resolution, while enhancing imaging contrast. However, ESBMV will cause black-spot...
Conference Factor (CF) algorithm is effective to suppress the side lobe of the ultrasonic image except for the far-field. To improve this demerit, a new algorithm Chirp Coherence Factor (Chirp CF) is proposed in this paper. In this method, the chirp signal is transmitted, and the received signals are processed with the pulse compression combined with adaptive weighting of CF. The new method can retain...
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