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Johns Hopkins Medical Imaging

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3-D Mammography

3-D mammography (also known as Tomosynthesis) is the most modern screening and diagnostic tool available for early detection of breast cancer.

While standard 2-D mammography produces a flat image, tomosynthesis creates a three-dimensional rendering of the breast — which results in greater accuracy, earlier breast cancer detection and a decrease in biopsies and recall rates.

Why choose a 3-D mammogram?

  • Detects 41% more invasive cancers
  • Reduces callbacks for a second look by 40%
  • Takes 30 seconds
  • Has been approved by the FDA
  • Is appropriate for all women

For questions about 3-D mammography, please call our office at 443-997-7237.

COVID-19 Vaccine and Scheduling

Getting a mammogram too soon after your second dose of the coronavirus vaccine could result in a false positive and a callback due to temporarily swollen lymph nodes. 

The Johns Hopkins Division of Breast Imaging supports the recommendation from the Society of Breast Imaging: When possible, and if it does not delay care your doctor recommends, you should schedule screening mammograms before your first dose of a COVID-19 vaccine or four to six weeks after the second dose. Read more.

3-D Mammogram: Why Choose Johns Hopkins Medical Imaging?

Johns Hopkins Medical Imaging brings the world-class expertise of Johns Hopkins to your community. Why does expertise matter? Because you matter. Here is how we do it:

  • Physician Experts. We set the standard for other radiologists around the world.
  • #1 Radiology Department. We are the top-ranked radiology department by U.S. News and World Report
  • State-of-the-Art Technology. Doing the right study with high quality increases accuracy.
  • Your Safety Is Always Our Priority. We take comprehensive safety measures to minimize any possible risk. 

What to Expect During Your First Mammogram

A mammogram is an important step in taking care of yourself and your breasts but not knowing what to anticipate can be stressful. Join Monica for her first mammogram experience with Johns Hopkins Medical Imaging to learn more about how to prepare for a mammogram and what to expect during and after the exam.


What happens during a 3-D mammogram?

  1. You will be asked to remove your clothing from the waist up and any other clothing or jewelry that may interfere with the exam.
  2. You will stand in front of the mammography machine and one breast will be placed on the X-ray plate.
  3. A separate flat plate will be brought down on top of the breast to compress it against the X-ray plate. You may feel some discomfort or pressure on your breasts during this X-ray process.This part of the process should only last for a few minutes.
  4. During your mammogram, the 3-D portion of the exam will occur simultaneously. The X-ray arm sweeps in a slight arc over the breast, taking multiple images in a matter of seconds.

A computer then produces a 3-D image of your breast tissue in one millimeter slices, providing greater visibility for the radiologist to see tissue details like never before.

What happens after a 3-D mammogram?

There is typically no special type of care following a mammogram. However, your health care provider may give you additional instructions depending on your specific health condition.

Request an appointment

Call 443-997-7237 to request an appointment for your annual screening mammogram. 3-D mammography will be billed to your insurance carrier. If 3-D mammography is not covered under your insurance policy then you will be billed a $57 fee by Johns Hopkins for the 3-D service. Learn more about insurance and billing.