Figure 3. Histogram of the mean optical density (OD) in the main breast regions of all the mammograms used in this study. (Labels on the mean OD axis represent the mid-points of the ranges used to sort the data.)
Figure 3. Histogram of the mean optical density (OD) in the main breast regions of all the mammograms used in this study. (Labels on the mean OD axis represent the mid-points of the ranges used to sort the data.)