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Magnetic Resonance Angiography (MRA), Thigh Vessels — With Intravenous Contrast

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

An MRI uses intravenous contrast to produce detailed images of the blood vessels in the thigh and nearby areas.

Quick summary

["This imaging test helps evaluate the thigh's blood vessels for narrowing, blockage, or other vascular abnormalities."]

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

Key facts at a glance

LOINC
25003-5
Short code
MRA Thigh ves W contr IV
Synonyms
MRA Thigh ves 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 MRA, is an imaging test that shows blood vessels throughout the body. For this test, the area being examined is the thigh, and an intravenous contrast agent is used to make the vessels easier to see.

Why might I need this test?

A thigh MRA may be ordered to investigate reduced blood flow, swelling, pain, or other symptoms that could be related to a blood-vessel problem. It may also be used to monitor certain conditions or plan treatment for a vessel abnormality.

How is the test performed?

You will lie on a table inside an MRI scanner while images of the thigh blood vessels are acquired. If intravenous contrast is required, it is usually given through a vein in your arm before or during the scan.

How do I prepare for the test?

Follow the instructions provided by the imaging center. Tell the staff if you have kidney disease, previous reactions to MRI contrast, implanted medical devices, or metal in your body, and disclose any relevant medications or allergies.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Thigh MRA with IV contrast

Frequently asked questions

Does a thigh MRA use radiation?
No. MRI-based angiography does not use ionizing radiation, although intravenous contrast is commonly used.
Is the contrast material the same for all patients?
The specific agent may vary. Your imaging center will review your medical history and check for prior contrast reactions or kidney problems before giving it.
Will I be able to drive after the test?
Most people can drive after an MRA. If you received sedating medication, your team may advise you to arrange another ride home.
  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