GLEN ELLYN — DuPage Medical Group expanded its diagnostic imaging services Tuesday by offering 3-D mammography, also known as breast tomosynthesis, at its location in Glen Ellyn.

3-D mammography allows radiologists to better identify and characterize individual breast structures by being able to scroll through the layers of the breast in 1-millimeter increments rather than viewing all layers of tissue superimposed, according to a DuPage Medical Group news release. This layer-by-layer approach removes overlapping breast tissue, which can hide lesions.

3-D mammography is offered at DuPage Medical Group’s Lisle and Naperville locations, where the equipment has been used for several months.