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Magnetic Resonance Imaging (MRI) of the Skull Base with Intravenous Contrast

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

An MRI that examines the bony and soft tissues at the base of the skull, using intravenous contrast to improve detail in certain tissues.

Quick summary

["This imaging study helps evaluate abnormalities involving the skull base, nearby nerves, blood vessels, and surrounding tissues."]

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

Key facts at a glance

LOINC
48440-2
Short code
MR Skull.base W contr IV
Synonyms
MR Skull.base 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?

This is an MRI of the skull base, the area where the skull meets the neck and where several nerves, blood vessels, sinuses, and other structures pass through or connect. Intravenous contrast may be given through a vein to make certain tissues and abnormalities easier to see.

Why might I need this test?

A skull-base MRI may be ordered to investigate symptoms such as persistent headache, vision or hearing changes, facial numbness or weakness, balance problems, nasal symptoms, or neck discomfort. It can also help assess known or suspected masses, inflammation, infection, injury, or the effect of nearby disease on the skull base.

How is the test performed?

You will lie on a padded table inside the MRI scanner. The scanner uses a strong magnetic field and radio waves to create detailed images, and contrast may be injected into a vein in your arm. You may be asked to remain still and may receive instructions through an intercom.

How do I prepare for the test?

Follow the imaging center's instructions, including telling the staff about metal implants, medication patches, pregnancy, prior contrast reactions, and kidney disease. You may need to avoid eating or drinking for a short period and may be asked to change into a gown or clothing without metal fasteners.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal findings may indicate a benign or suspicious mass, inflammation, infection, altered fluid or nerve structures, blood-vessel involvement, injury, or another condition affecting the skull base. The radiologist interprets the images in the context of your symptoms and other tests, and additional evaluation may be needed if a finding requires follow-up.

Short name

Skull Base MRI with IV Contrast

Frequently asked questions

Does this test use radiation?
No. MRI uses a magnetic field and radio waves rather than ionizing radiation. The injected contrast is not radioactive.
Is the IV contrast required for every skull-base MRI?
No. Contrast may be used when it is needed to highlight particular tissues or abnormalities. The order and the radiologist's protocol determine whether it is administered.
What if I am pregnant or have had a contrast reaction?
Tell the imaging staff before the examination. They will review the reason for the study, your symptoms or prior reactions, and any relevant medical history to determine how to proceed safely.
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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