1. A system for solving for shear wave information in medical ultrasound imaging, the system comprising: a receive beamformer operable to output data representing spatial locations as a function of received acoustic signals; a processor configured to estimate tissue displacements due to a shear wave as a function of a level of similarity between sets of the output data, compute correlation coefficients of at least one pair of the processor estimated tissue displacements from different ones of the spatial locations, solve for a traveling time of the shear wave based on the correlation coefficients, and generate an image as a function of the traveling time; and a display operable to display the image.