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Fig. 1A. —Sponge used to simulate breast with patient in prone position on Fischer table (Fischer Imaging, Denver, CO) being maximally compressed by front compression paddle (FCP) in two different ways. Photograph shows minimal sponge thickness (1.9 cm) achieved by hand pressure flattening front of sponge to minimize sponge protrusion through 5 x 5 cm aperture in FCP while back of sponge is compressed against digital image receptor (DIR).