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Magnetic Resonance Angiography (MRA), Thoracic Spine — With and Without Intravenous Contrast

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

An imaging test that uses magnetic fields and sometimes intravenous contrast to examine blood vessels near the thoracic spine and spinal cord.

Quick summary

["This test helps evaluate the blood supply to the thoracic spinal cord and can identify problems affecting nearby blood vessels."]

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

Key facts at a glance

LOINC
37508-9
Short code
MRA T-spine ves WO+W contr IV
Synonyms
MRA T-spine ves 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 MRA, creates detailed images of blood vessels near the thoracic spine. It may include images taken before and after an intravenous contrast agent is given.

Why might I need this test?

Your clinician may order this test to investigate symptoms that could be related to impaired blood flow to the spinal cord, such as sudden weakness, numbness, or difficulty walking. It may also be used to evaluate suspected vascular abnormalities.

How is the test performed?

You lie on a table inside an MRI scanner while images are taken. The scanner makes loud knocking sounds, and the examination may last 30 to 60 minutes. If contrast is used, it is given through a vein in your arm.

How do I prepare for the test?

Follow the instructions provided by the imaging center because eating or drinking restrictions depend on the study and whether contrast is used. Tell the care team about metal implants, medication patches, pregnancy, kidney disease, or any prior contrast reaction.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may indicate narrowing, blockage, an abnormal vessel connection, or another vascular condition affecting the spinal cord. Results should be interpreted with your symptoms, medical history, and other examinations. Any kidney-related concerns should be discussed before contrast is administered.

Short name

Thoracic Spinal MRA

Frequently asked questions

Does this test use radiation?
No. MRI and MRA use magnetic fields and radio waves rather than ionizing radiation.
Will I need intravenous contrast?
It depends on the exact study ordered. The examination may include both non-contrast and contrast-enhanced images, and the care team will tell you in advance.
What if I am uncomfortable inside the MRI scanner?
Tell the imaging staff before the examination. Many centers can provide headphones, breaks, breathing guidance, or other accommodations, and sedation may be considered in selected cases.
  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