1. A method for imaging a region of interest (“ROI”) including a breast that has received a dose of radionuclide with a molecular breast imaging (MBI) system, the method comprising the steps of: a) with the use of the at least two gamma detectors of the MBI system, acquiring imaging data representing the ROI that is compressed between said at least two gamma detectors; b) segregating the imaging data into a plurality of subsets of data acquired from a plurality of energy windows containing a primary energy window and secondary energy windows, a primary energy window from the plurality of energy windows containing a single photopeak; energies of each of secondary energy window being lower than any energy from the primary energy window, each secondary energy window not including the single photopeak; each subset of data defined according to a corresponding energy window from which data in said subset has been acquired, c) generating a plurality of images using the subsets of data, wherein the plurality of images include a primary image corresponding to a primary subset of data defined by the primary energy window and multiple secondary images, each secondary image respectively corresponding to a secondary subset of data defined by a respective secondary energy window; d) processing each of the plurality of images using energy information associated with each of the plurality of images to form a processed plurality of images, the processed plurality of images including processed secondary images and a processed primary image; and e) recovering imaging counts lost from the primary subset of data due to tailing effects in the at least two gamma detectors (i) to increase imaging sensitivity of said MBI system as compared with utilizing only the processed primary image and (ii) to form a composite image of the ROI that contains information from said multiple secondary images by adding imaging data represented by processed secondary images to imaging data represented by the processed primary image.