3D Mammography
(Tomosynthesis)

 
 
 
 

What is 3D mammography?

Also called digital breast tomosynthesis, 3-D mammography uses a special approach to enable highly-detailed images of the breast tissue to be captured. RAI is proud to be the first to offer 3D Mammography in Mercer County in an effort to improve breast cancer screening and prevention exclusively at our Lawrenceville, NJ imaging center. 3D mammography is performed in conjunction with 2-D mammography; once the 2D images have been made, a special x-ray arm sweeps over the curve of the breast, emitting x-rays as it progresses to make a series of images of thin slices of breast tissue that can be examined individually, viewed as a dynamic interactive animation or combined using special software to produce three-dimensional images of the interior of the breast.

Studies have shown that a 3D mammogram can significantly improve detection of breast cancers, especially those in their earliest stages that might otherwise be missed with traditional 2D mammography alone. The ability to flip through individual images makes it easier to view fine details that could otherwise be hidden behind overlapping tissue. Because images are so accurate and can be viewed in so many different ways, a 3D mammogram also decreases the chances you'll be called back for additional imaging, an advantage that can decrease the anxiety and worry that often go hand-in-hand with mammography recalls. 3D mammography was approved by the FDA in 2011 and has been widely used since then to help women get more accurate results they can feel confident about.

When is 3D mammography performed?

3D mammography can be performed at any time a 2D mammography procedure is being performed. Because it uses advanced technology, there is an added expense associated with 3D mammograms, and the diagnostic imaging technique also involves a slightly higher amount of radiation compared to the 2D procedure alone. However, because it can detect breast cancer in its earliest and most treatable stages, it's often recommended for women who have increased risks for breast cancer, including those who have a family history of the disease. Your doctor will be able to determine if you have specific risk factors that would make the 3D technique appropriate for your health needs.

It's important to note that while a 3D mammogram offers an improved image clarity over its 2D predecessor, some insurance providers consider 3D mammography "experimental" and may not cover the procedure. It is always best to check with your insurance provider to make sure this procedure is covered.

What happens during the procedure?

A 3D mammography procedure is performed immediately following a 2D (traditional) mammogram. Before the procedure begins, you'll need to remove your shirt and your bra and put on a hospital gown. During the exam, your breast will be positioned on a special platform and a flat plate or paddle will be placed above your breast. The paddle will slowly move down, compressing and flattening your breast tissue so it can be more easily viewed. Compressing the tissue also makes it easier to see smaller abnormalities and it can decrease the amount of radiation required to obtain detailed images. You may be asked to take different positions during the exam for more accurate images. Once the 2D portion of the exam is complete, a special arm attached to the unit will pass over your breast tissue, taking additional images to create the 3D images of your breast tissue. The entire procedure typically takes less than 30 minutes, and you'll be able to resume your regular routine immediately afterward.

Preparation Instructions


  • Do not apply any deodorant, powder or cream to the under arm or breast area on the morning of your exam.
  • Two piece clothing is most convenient as you will be asked to change into a gown from the waist up.
  • If you have had surgery, bring films and reports that we taken before, during and after your surgery, along with a copy of the pathology report.
  • To reduce breast tenderness, eliminate caffeine for several days before the exam.
  • Bring your prescription and insurance card.
  • Bring all previous imaging/radiology studies and reports (that were not done at RAI) relating to your current study.
  • For additional Information please call (609) 585-8800

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