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In Ultrasound elastography, the decorrelation effect of the tissue under slightly amount of compression (less than 1%) is mainly caused by nonlinear tissue deformation, therefore the image noise caused by decorrelation is system-independent, which also becomes the major constraints for strain estimation and imaging. In this paper, one-dimensional adaptive extension method in time domain and amplitude...
Since the optical flow method can't estimate the large displacement, the two-dimensional compression expansion method is proposed in this article to compensate for the large-scale movements in the image before the optical flow estimation. As a result, the related effects of decorrelation caused by the lateral displacement of the longitudinal compression can be effectively eliminated. Experimental...
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