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3D Mammography

Women have access to the latest breast imaging technology at St. Luke's, including 3D mammography. Also referred to as breast tomosynthesis, 3D mammography is an advanced screening and diagnostic tool designed to improve early breast cancer detection.

3D mammography (as well as 2D digital mammography) is available for walk-in screening mammograms and mammogram appointments at these locations:

St. Luke's Women's Center at St. Luke's Hospital
232 S. Woods Mill Road, Suite 200 East
Call 314-205-6267

St. Luke's Women's Center - Chesterfield Valley
6 McBride & Son Drive, Suite 102
Call 636-530-5505

St. Luke's Mobile Mammography Unit (the first mobile unit in the St. Louis area to offer 3D mammography)
Call 314-205-6267
View the schedule

St. Luke's CDI - Midwest Breast Care
450 North New Ballas Road, Suite 250 N
Call 314-567-4449

More Mammogram Locations

Benefits of 3D mammography

  • It improves breast cancer detection by up to 40%.
  • It reduces the chance of call-backs for follow-up imaging by up to 40%.
  • It is particularly beneficial for women with dense breasts or with a personal or family history of breast cancer.

What's the difference - 2D vs. 3D?
Image - 3D provides a clearer, more detailed picture of the breast tissue.


  • 2D produces 2 single images of the breast.
  • 3D produces multiple thin images of the breast. This shows greater detail and can uncover cancers hidden in a 2D image by overlapping tissue.

Exam time - 3D exam time is nearly the same as for 2D.
X-ray exposure - Nearly the same for 2D and 3D.

What is the cost?
Annual screening mammography is a covered benefit under most health insurance plans (including under the Affordable Care Act) and Medicare. Furthermore, 3D screening mammography is:

  • fully covered by most Medicare plans.
  • fully covered by most private health insurances.
  • partially covered by some private health insurances; out-of-pocket fees and deductibles may apply for 3D screening mammography and vary by health plan. 

Ask your insurance provider about your coverage.

If you have additional questions, ask your mammography X-ray technologist performing your exam and/or discuss with your physician or healthcare provider to determine what is best for you.