What to expect: mammograms and breast ultrasound
Two common imaging tests, explained
The short version
A mammogram is a low-dose X-ray of the breast. An ultrasound uses sound waves instead of radiation and can help tell whether something is solid or fluid-filled. Your care team may recommend one or both depending on your situation.
A mammogram uses a low dose of X-rays to create images of breast tissue. A breast ultrasound uses sound waves rather than radiation, and is often used alongside a mammogram — for example, to help tell whether a finding is a solid mass or a fluid-filled cyst.
A note on timing
Results aren't always immediate. Depending on where you're imaged, you may hear back the same day or within a few days — it's reasonable to ask when and how you'll be contacted.
- Wear a two-piece outfit — you'll need to undress from the waist up
- Avoid deodorant, powder, or lotion on your chest and underarms before a mammogram, since these can show up on the images
- Bring prior imaging if you're going to a new facility, if you can
Questions you may want to ask
What are you looking for with this test specifically?
When and how will I get my results?
Will I need additional imaging afterward?