1. A method for processing image data, comprising the steps of: acquiring a set of image data representative of a region of interest; acquiring a set of motion data for two or more organs from at least one of one or more types of electrical sensors and one or more types of non-electrical sensors, wherein the set of image data is acquired substantially concurrent with the set of motion data; processing the set of motion data to extract two or more retrospective gating points; and processing a portion of the set of image data based upon the two or more retrospective gating points.