A breast MRI is a noninvasive imaging test that uses powerful magnets and radio waves to create pictures of the inside of your breast and surrounding tissue without using radiation (x-rays). It can be used in combination with mammography and ultrasound. It is also useful in evaluating scarring and recurrent cancer that may not show up on mammogram or ultrasound.
For some exams, a special dye is injected into your arm. This enhances the images and helps your doctor (radiologist) better see certain areas. The contrast is called gadolinium. If you have kidney disease, diabetes or lupus or are over 60 years old, you will need to do a blood test to make sure it is safe for you to receive the contrast.
Breast MRI for Breast Implants: What to Expect and When It’s Necessary
Before your MRI, you will be given instructions on how to prepare for the scan. You will be asked to wear a hospital gown or clothes that do not have metal snaps or zippers (like sweatpants and a shirt). Depending on your condition, you might need to remove some types of metal objects such as earrings, necklaces, keys or dental fillings before the test. You will need to lie very still during the MRI. You will hear loud thumping and tapping noises while the scan is taking place. Some people find these noises disturbing and have trouble focusing. Your technologist will give you earplugs or headphones to help reduce the noise and most hospitals have intercoms so that you can ask questions at any time.