1. A method for correcting fat-induced aberrations in ultrasound imaging, the method comprising: segmenting a thermoacoustic absorption image of a region of interest into at least one fat region and at least one non-fat region; creating a speed of sound map by assigning a speed of sound to each region based on tissue type of the region; correcting aberrations in the segmented thermoacoustic absorption image using the assigned speeds of sound thereby generating a corrected thermoacoustic image; and correcting an ultrasound image of the region of interest using the corrected thermoacoustic image and the speed of sound map.