Three-dimensional mammography, also known as breast tomosynthesis, is a form of digital mammography. Unlike standard digital mammograms, which create a two-dimensional view from the top and sides of your breast tissue, 3D tomosynthesis mammograms take low-dose images from many angles using essentially the same overall radiation dose as regular 2D mammograms. A computer then reconstructs those images into a 3D image of your breast.
Research indicates 3D mammograms find 25 to 35% more breast cancers and result in up to 30% fewer false positive results. Data also show 3D mammography does a better job finding breast cancer in dense breast tissue. All Duke sites in Durham, Orange, and Wake counties offer 3D tomosynthesis for all screening and diagnostic mammograms.
Bottom line: Talk to your doctor about whether you will benefit from a 3D mammogram.