FIG. 2.

(a) Schematic showing incorporation of a Gaussian-shaped radial glandular distribution (top) into contoured regions of the compressed breast phantom (bottom). (b) Cranial–caudal view of contoured breast phantom showing shape of ellipsoidal contoured regions and three coronal regions for reference with the work of Huang et al. (Ref. 6). R₁ is the posterior region, R₂ is the middle region, and R₃ is the anterior region.