Brain MRI With and Without IV Contrast and MR Angiography Without Contrast

What is this test?

Magnetic resonance imaging, or MRI, uses magnetic fields and radio waves to create detailed images of the brain. MR angiography, or MRA, is an MRI technique that shows the brain's major blood vessels. This order includes brain imaging with and without intravenous contrast and MRA imaging without contrast.

Why might I need this test?

These studies may be ordered to investigate unexplained neurological symptoms, severe or persistent headaches, suspected stroke, seizures, vision changes, or weakness. Brain MRI can help evaluate conditions such as tumors, inflammation, infection, or multiple sclerosis, while MRA can assess vessels affected by narrowing, blockage, or aneurysm.

How is the test performed?

You will lie on a movable table inside an MRI scanner and remain still while the images are recorded. If IV contrast is used, it is given through a vein in your arm. The examination may be noisy, but it is generally painless and does not use ionizing radiation.

How do I prepare for the test?

Follow the imaging center's instructions and tell the staff about any metal implants, medication patches, pregnancy, kidney disease, or previous contrast reactions. Remove jewelry, watches, hairpins, and other metal objects as directed. Let the staff know if you are claustrophobic; sedation or other comfort measures may be available.