What is Breast MRI?

Breast MRI (Magnetic Resonance Imaging) employs a strong magnetic field to create detailed images of the breast's internal structures. It is mainly used as an additional tool alongside mammography or ultrasound. This imaging technique may be used to screen women at high risk for breast cancer, assess the extent of cancer after a diagnosis, or further investigate any abnormalities detected in mammograms. Unlike some imaging methods, breast MRI does not involve ionizing radiation and is especially effective in checking for ruptured silicone breast implants.

Before the exam, inform your doctor about any existing health issues, recent surgeries, allergies, or the possibility of pregnancy. Although the magnetic field is safe, it might affect certain medical devices. Most orthopedic implants are not a concern, but you should always disclose any metal or devices in your body to the technologist. Eating and drinking guidelines can differ by facility, so follow specific instructions provided to you. Continue taking your regular medications unless instructed otherwise. Avoid wearing jewelry and opt for loose, comfortable clothing; you might be asked to wear a gown. If you experience claustrophobia or anxiety, discuss with your doctor the option of a mild sedative before the procedure.

How the procedure is performed?

MRI exams are generally done on an outpatient basis. During the procedure, the technologist will help you onto a moveable exam table and may use straps and bolsters to ensure you remain still and in the correct position.

For a breast MRI, you will lie face down on a specially designed platform that has openings to accommodate your breasts without applying compression. The imaging equipment is integrated into this platform. Staying very still is crucial for clear images, and this is best achieved if you are comfortable and relaxed.

If you experience any discomfort, let the technologist know to avoid unnecessary movement. If the MRI is being done to check for a ruptured breast implant, no contrast material will be used. However, if the exam is for other purposes, such as detecting breast cancer, contrast material will be injected intravenously to enhance the images. MRI without contrast is typically insufficient for identifying cancer.

If contrast material is required, a doctor, nurse, or technologist will insert an IV line into a vein in your hand or arm to administer the contrast. After an initial series of scans, the contrast will be injected, and additional images will be taken either during or after the injection.

During the exam, you will be placed inside the MRI magnet while the technologist operates the equipment from a computer outside the room. You will be able to communicate with them via an intercom.

Once the exam is complete, you may be asked to wait briefly while the radiologist reviews the images to determine if any additional scans are needed. The technologist will then remove the IV line and place a small dressing over the insertion site.

The imaging session usually lasts between 30 minutes and one hour, with the entire process, including preparation and any additional scans, typically taking about an hour and a half.

What are the benefits of Breast MRI?

1. Tell the difference between scar tissue and tumors in the breast.
2. Review an abnormal finding on a mammogram or breast ultrasound.
3. Detect any cancer that might still be present after surgery or chemotherapy.
4. Check for potential rupture of breast implants.
5. Evaluating lumpectomy sites in the years following breast cancer treatment
6. Assist in guiding a biopsy procedure.
7. Look for additional cancer in the same breast or the other breast after a breast cancer diagnosis.