Breast MRI
Breast MRI is an excellent test for evaluating mammogram abnormalities and identifying early breast cancer, especially for women at high risk. It is performed in a magnetic resonance imaging (MRI) scanner and provides detailed views of the breast and from multiple angles.
Breast MRI is not intended as a replacement for mammography or ultrasound imaging. It is a supplemental tool for detecting and staging breast cancer as well as other breast abnormalities. It can help detect breast cancer in women with breast implants, inverted nipples, and younger women with dense breast tissue. Because MR imaging does not involve radiation, the procedure can be used to screen women younger than the age of 40.
The American Cancer Society (ACS) recommends that women with cancer, women at high risk for breast cancer, and women with breast implants should have an annual MRI scan in addition to mammography.
Preparation Instructions
MRI does not expose you to radiation of any kind, so no special preparation is needed. You may eat normally before your breast MRI and take your regular medication. Please wear comfortable, loose-fitting clothing. However, clothing with zippers, metal buttons or snaps cannot be worn, nor can underwire bras, due to the magnetic field generated by the MRI machine. A cotton dressing gown will be available for you to use.
The newer generations of MRI equipment are designed to be more open and less confining. However, some patients having an MRI may feel a little anxious or claustrophobic. If you think it may be needed, you can request a mild sedative.
Metallic objects are not allowed inside the MRI suite because they could be harmful. Please inform us if you have any of the following:
- Pacemaker
- Ear implants (Cochlear)
- Some artificial heart valves
- Surgical staples
- Neuro-stimulator (TENS unit)
- Aneurysm clip(s)
- Implanted drug infusion devices
- Worked as a welder or grinder of metal
Objects that must be removed prior to your MRI test include:
- Jewelry
- Watches
- Hairpins
- Clothing containing metal zippers, belts, or buttons
- Removable dental work (non-removable dental work is fine, but may distort the images if scanning the facial or head area)
- Eyeglasses
- Hearing aides
What to Expect
Unlike a mammogram or breast ultrasound, you are required to lie still on your stomach during a breast MRI. The test usually takes between 30 minutes and one hour.
Although the technologist will leave the room as the MRI is performed, they will observe you during the entire exam. They will communicate with you via a two-way intercom system.
It is normal to hear a loud “knocking” noise made by the MRI machine as it operates. You will be offered ear plugs or headphones for music for a more comfortable experience.
After your MRI, you can resume normal activities. Your doctor will receive a report from our radiologist that will include your test results and images.
