A 3D mammogram is a new screening and diagnostic tool designed for early breast cancer detection that can be done in conjunction with a traditional 2D digital mammogram.
During the 3D part of the exam, the X-ray arm sweeps in a slight arc over your breast, taking multiple breast images.
During a typical annual screening mammogram (2D or 3D), images are taken of each breast from many angles. Sometimes a follow-up diagnostic mammogram is needed after a screening mammogram to collect more information about your breast tissue. A diagnostic mammogram may take longer than a screening mammogram as it requires more images and different angles to rule out any abnormalities.