This illustration shows the makeup of breast anatomy both inside and outside. These tissue types appear thicker and denser than fatty tissue and will show up.
Usually between – 2mm thick; Composed of epidermal cells; Contains sebaceous glands and hair follicles; Covers the subcutaneous layer of breast tissue.
If a breast is not properly flattened against the chest, it is difficult to feel a lump – particularly in the outer upper quadrant, where tissue is thickest (and where most .
However, in a current commercial tomosynthesis system, it has been found that higher-energy spectra are used only for the thickest breasts when comparing.