Figure 13.

The glandular fraction of sagittal bCT slices versus the relative y position for women is shown for breasts with bra cup sizes (a) A, (b) B, (c) C, and (d) D. The direction of y position relative to a bCT volume data set is illustrated in A, where 0 is superior and 1 is inferior. The dashed line is the mean GF_sagittal and the solid line is the median GF_sagittal. The darker shade covers the range of 25th percentile below and 75th percentile above the median. The lighter shade covers the range of standard error above and below the mean.