1. A method for providing a diagnostic image as a combination of two or more images, executed at least in part on a control logic processor, comprising: obtaining at least first and second image data of a subject; analyzing both the first and second image data to identify at least grid orientation and spacing; applying grid suppression to the first and second image data; preprocessing the grid suppressed first and second image data; combining the grid suppressed first and second image data and decomposing the combined data to obtain one or more diagnostic images for display; and displaying the one or more diagnostic images on a display.