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Magnetic Resonance Angiography (MRA), Heart — With or Without Intravenous Contrast

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

An MRI-based imaging test that evaluates the heart and nearby blood vessels, with or without intravenous contrast.

Quick summary

["This test produces detailed images of the heart and its blood vessels to help assess narrowing, blockage, or other vascular abnormalities."]

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

Key facts at a glance

LOINC
105172-1
Short code
MRA Hrt WO+W contr IV
Synonyms
MRA Hrt WO+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-angio
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?

Magnetic resonance angiography, or heart MRA, is an MRI-based test that creates detailed images of the heart and nearby blood vessels. Depending on the order, it may be performed with or without intravenous contrast.

Why might I need this test?

A heart MRA may be ordered to evaluate blood flow and look for narrowing, blockage, aneurysms, or other abnormalities of the heart and its major vessels. It may also help guide cardiovascular care or planning for a procedure.

How is the test performed?

You lie on a table inside an MRI scanner, which uses a strong magnetic field and radio waves to create images. If contrast is used, it is given through a vein in your arm; the scan usually takes 30 to 60 minutes, although the exact timing varies.

How do I prepare for the test?

Follow the instructions provided by the imaging center. Tell the staff about metal implants, heart devices, claustrophobia, kidney disease, pregnancy, or prior contrast reactions. If contrast is planned, the center may ask you to avoid eating or drinking for a limited period beforehand.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Heart MRA

Frequently asked questions

Does this test use radiation?
No. MRI does not use ionizing radiation, and contrast material is not always needed.
Is intravenous contrast always used?
No. The test may be ordered with contrast, without contrast, or with both, depending on the information the clinician needs.
Can I have an MRA if I have a metal implant?
Many implants can be scanned safely, but the MRI team must review the device or implant information before the test. Always tell the staff about any implanted devices, pins, or other metal objects.
  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