Breast MRI
What to expect from an MRI
Sources checked: September 2026
The short version
A breast MRI uses a strong magnet and radio waves, not radiation, to create detailed images. It's sometimes used alongside mammograms or ultrasound, particularly for denser breast tissue or a more detailed pre-surgery picture.
A breast MRI uses a strong magnetic field and radio waves rather than radiation to produce detailed images. It's often used alongside a mammogram or ultrasound — for example, to get a more detailed view before surgery, or for people at higher risk.
- You'll typically lie face-down with your breasts positioned in an opening in the table
- A contrast dye is usually given through an IV to help highlight areas of concern
- The scan itself often takes 30-45 minutes and involves loud noises — earplugs or headphones are usually provided
Questions you may want to ask
Why is an MRI being recommended in addition to my other imaging?
Is the contrast dye safe for me given my other health conditions?