Brain Perfusion Magnetic Resonance Imaging With Intravenous Contrast

What is this test?

Brain perfusion MRI is a type of magnetic resonance imaging that evaluates how blood flows through different areas of the brain. Intravenous contrast is given to help produce detailed images showing circulation and changes in blood flow.

Why might I need this test?

This test may be used to investigate symptoms such as sudden weakness, speech difficulty, confusion, or seizures. It can help assess blood-flow abnormalities associated with conditions including ischemic stroke, narrowed blood vessels, and other neurologic disorders.

How is the test performed?

You will lie on a table inside an MRI scanner while images are taken. A contrast medicine is usually given through a vein in your arm, and the scan may be repeated as the contrast moves through the brain. You need to remain still and follow the technologist's instructions.

How do I prepare for the test?

Follow the imaging center's instructions about eating, drinking, and medications. Tell the care team if you are pregnant or may be pregnant, have kidney disease or a prior contrast reaction, or have metal implants, a pacemaker, or other devices in your body. You may be asked to avoid caffeine or nicotine before the scan.