Fig. 1From: Beyond breast density: a review on the advancing role of parenchymal texture analysis in breast cancer risk assessmentRegions of interest (ROIs) used in texture analysis. a single ROIs selected in the retro-areolar breast area, b the entire breast and the largest rectangular box inscribed within the breast, studied as single ROIs, c multiple ROIs at multiple scales of density, and d multiple ROIs defined by a lattice covering the entire breastBack to article page