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Breast Magnetic Resonance Imaging (MRI), Specified Side or Sides, with Intravenous Contrast

Published: August 9, 2026Updated: August 16, 2026

A breast MRI uses magnetic fields and intravenous contrast to produce detailed images of breast tissue.

Quick summary

["This imaging study helps evaluate breast abnormalities and may be used to guide diagnosis or treatment."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
36151-9
Short code
MR Brst-L W contr IV
Synonyms
MR Brst-L W contr IV
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mr
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

Breast magnetic resonance imaging (MRI) creates detailed pictures of the breast without using ionizing radiation. The specified side or sides in the order determine which breast or breasts are imaged.

Why might I need this test?

A breast MRI may be used to investigate a breast lump, assess the extent of a known abnormality, evaluate certain high-risk situations, or examine breast implants. It may also help monitor the response to treatment.

How is the test performed?

You will lie on a padded table while the MRI machine takes images. Intravenous contrast is given through a vein to improve the visibility of some tissues, and the scan usually lasts from about 20 to 60 minutes.

How do I prepare for the test?

Fasting is generally not required, but follow the instructions provided by the imaging center. Tell the care team about pregnancy, previous contrast reactions, kidney disease, and any implanted devices or metal in your body.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

MRI findings can help identify and characterize breast masses or other abnormalities and may show the extent of disease. Abnormal findings are not automatically cancerous and may reflect benign conditions. Results should be interpreted by your clinician together with the examination and any additional imaging or tissue testing.

Short name

Breast MRI with contrast

Frequently asked questions

Does a breast MRI use radiation?
No. MRI uses magnetic fields and radio waves, not ionizing radiation.
Why is contrast given through a vein?
Intravenous contrast can improve the appearance of breast tissue and blood vessels, helping the radiologist identify and evaluate abnormalities.
Will I need a biopsy because of an MRI result?
Not necessarily. A suspicious MRI finding may lead to more focused imaging, follow-up, or biopsy, but the decision depends on the complete clinical and imaging findings.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy