Magnetic Resonance Angiography (MRA) of the Neck Vessels — With and Without Intravenous Contrast

What is this test?

Magnetic resonance angiography, or MRA, is an MRI technique that produces detailed images of blood vessels. In this examination, the vessels of the neck are evaluated, both before and after an intravenous contrast agent is given.

Why might I need this test?

A neck MRA may be ordered to investigate symptoms such as neck or head pain, dizziness, weakness, numbness, difficulty speaking, or reduced blood flow to the brain. It may also be used to monitor known blood-vessel disease or plan treatment.

How is the test performed?

You lie on a moving table inside an MRI scanner while images of the neck vessels are acquired. If IV contrast is part of the examination, it is given through a vein in your arm, and the scan is repeated as the contrast moves through your bloodstream.

How do I prepare for the test?

Follow the imaging center's instructions about eating, drinking, and medications. Tell the staff if you have kidney disease, have had a prior reaction to MRI or contrast, are pregnant or may be pregnant, or have implanted medical devices; the MRI safety screening will determine what precautions are needed.