Perfusion Imaging of the Brain (Head)

What Is Perfusion Imaging Used For?

Perfusion imaging is often used to diagnose conditions affecting blood flow in the brain, such as strokes, tumors, or other vascular issues. It may also help determine the extent of damage after a stroke or guide treatment decisions for conditions like brain aneurysms or arteriovenous malformations.

How Is This Test Performed?

You’ll likely receive a contrast agent (a special dye) injected into your bloodstream. A scanner captures detailed images of blood flow over time, showing how quickly and efficiently blood moves through your brain’s tissues. This process may involve lying still for several minutes while images are taken.

Preparation Before the Test

No special preparation is needed, but you may be asked to fast for a few hours before the test if contrast dye is used. Wear comfortable clothing and remove any jewelry or metal objects that could interfere with imaging. Inform your doctor about any allergies to contrast agents or medications you’re taking.

What to Expect During the Test

You’ll lie on a table that moves into the scanner. The scanner will make some noise, but it’s safe and won’t hurt you. You may feel a slight pressure or warmth where the contrast is injected. The test usually takes about 30–60 minutes, depending on the imaging technique used.