Image compounding applied on a lesion produced in the tissue phantoms: (a) push in the left, (b) push in the right, (c) compounded B-mode image, (d) compounded shear wave velocity image, and (e) lesion. Panels (a) and (b) show the shear wave velocity images produced with shear waves generated on the left and right sides of the lesions, respectively. Using a simple image registration algorithm, the two images were compounded to form the full lesion images [panels (c) and (d)]. The compounded image better outlined the entire lesion, as confirmed with the lesion morphology [panel (e)].