Figure 1
From: The spatial distribution of radiodense breast tissue: a longitudinal study
Plots of regional versus overall percent density for all study participants. (a) Schematic representation of the defined 48 regions in the breast (numbers in brackets indicate number of women who had breast tissue in the relevant region at the left exit medio-lateral oblique (MLO) screen). (b) Regional percent density (PD) plotted against overall PD (at the left exit MLO mammograms), by region.