Breast MRI

Breast MRI (or breast magnetic resonance imaging), is a test that uses magnetic fields and radio waves to create detailed, computer-generated images of your breast tissue. This helps radiologists detect breast cancer and other abnormalities in the breast.

Generally, a breast MRI is performed once a biopsy has determined cancer and your doctor requires further information regarding the extent of the cancer. In certain cases, an MRI may be used with a mammogram as a breast cancer screening tool, especially in women who are at high risk.

For women with dense breast tissue, this form of imaging has undoubtably improved the peace of mind for both radiologist and patient.

The purpose of a breast MRI

A breast MRI is not a substitute for mammography or ultrasound imaging, but rather a supplemental tool. Common uses of this procedure are: :

  • To screen for breast cancer.
  • To help determine the extent of breast cancer.
  • To further evaluate hard-to-assess abnormalities.
  • To evaluate the size and precise location of breast cancer lesions.
  • To evaluate lumpectomy sites in the years following breast cancer treatments.
Brunette woman smiling whilst holding pink breast cancer ribbon
Brunette woman smiling whilst holding pink breast cancer ribbon

How to prepare for a breast MRI

To prepare for your breast MRI:

  • Wear loose fitting clothing without metal fasteners.
  • Inform your radiologist if you are pregnant and/or nursing.
  • Let your radiologist know if you have any medical implants or clips in your body.

Breast MRI FAQs

Here are the answers to the most frequently asked questions around Breast MRIs:

How long does a breast MRI take?

A breast MRI will take between 30 minutes to one hour. After the test you may be required to wait while pictures are checked to see if more are needed.

What should you not do before a breast MRI?

Do not wear any jewelry and refrain from wearing any powder, perfume and/or lotions on your underarms and breasts prior to the procedure. .

When is the best time to get a breast MRI?

The best timing for a breast MRI is day 7-15 of the menstrual cycle. For premenopausal women, a breast MRI can be done at any time. It’s worth noting that if you get the exam at the wrong time of your cycle, there is a much greater risk of getting a false-positive.

Brunette woman smiling whilst holding pink breast cancer ribbon
Brunette woman smiling whilst holding pink breast cancer ribbon

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