Fig. 3From: Quantitative background parenchymal uptake on molecular breast imaging and breast cancer risk: a case-control studyExample ROIs for quantitative BPU assessment. Breast images acquired in the mediolateral oblique position for two patients. Fibroglandular tissue is defined by the orange ROI and fat is defined by the green ROI. In panels a and b, the mammogram (a) and MBI (b) are shown for a patient classified as having photopenic BPU, measured quantitatively as 0.4. In panels c and d, the mammogram (c) and MBI (d) are shown for a patient with marked BPU, measured quantitatively as 2.4Back to article page