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Magnetic Resonance Angiography (MRA)

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

Magnetic resonance angiography uses magnetic fields and radio waves to create images of blood vessels and assess blood flow without radiation.

Quick summary

["This test helps doctors evaluate blood vessels and blood flow, including when narrowing, blockage, or aneurysm is suspected."]

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

Key facts at a glance

LOINC
30886-6
Short code
Deprecated MRI.Angio
Synonyms
Deprecated MRI.Angio
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mri-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 MRA, is a type of MRI that creates images of blood vessels. It may show arteries, veins, or both, depending on the area being examined.

Why might I need this test?

Your doctor may order MRA to investigate symptoms such as chest pain, weakness, numbness, difficulty speaking, vision changes, or a severe headache. It can also be used to monitor certain conditions or plan medical procedures.

How is the test performed?

You lie on a table inside an MRI scanner while images are taken. The scan may include an injected contrast material, and it usually takes 30 to 60 minutes, although timing varies by the body area and protocol.

How do I prepare for the test?

Follow the instructions provided by your imaging center. Tell the care team if you have a pacemaker, other implanted medical device, kidney disease, or an allergy to contrast material, and do not bring metal objects into the scanner room.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Magnetic Resonance Angiography

Frequently asked questions

Does magnetic resonance angiography use radiation?
No. MRA uses magnetic fields and radio waves rather than ionizing radiation, which is different from standard CT angiography.
Will I need contrast material?
Some MRA studies use an injected contrast material, while others do not. The imaging center will tell you which protocol is being used and whether an IV line is needed.
Is magnetic resonance angiography the same as a regular MRI?
It uses the same basic MRI technology but is specifically designed to image blood vessels and blood flow. It may be performed alone or as part of a larger MRI examination.
  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