3D mammography creates a 3-dimensional picture by taking multiple images of each breast from many different angles.  Conventional 2D mammography takes only two x-rays of each breast from two different angles.
 
The breast is positioned the same way as in a conventional 2D mammogram, but with 3D mammography, the X-ray tube moves in an arc around the breast while images are taken. The information is then sent to a computer, where it is assembled to produce clear, highly focused 3-dimensional images of the breast.  
 
Although women might not notice a difference in how the exam is performed, the benefits of the new technology are significant.  Studies show that 3d mammography offers improved clarity and cancer detection, especially in women with dense breast tissue.   Providing early detection of breast cancer is key to successful treatment and cure, as well as for giving women peace of mind.