Nuclear Medicine Scan of Cerebral - Perfusion Spect

What Is a Cerebral Perfusion SPECT Scan?

A cerebral perfusion SPECT scan is a specialized nuclear medicine imaging test that evaluates blood flow (perfusion) to different areas of your brain, which directly correlates to how well your brain cells are functioning. During the procedure, a very small, safe dose of a radioactive tracer is injected into a vein in your arm; this tracer travels through your bloodstream and accumulates in regions of your brain with active blood flow. A specialized gamma camera then captures detailed 3D images of your brain over the 10-minute scan, with no intravenous contrast dye used and no special dietary or medication adjustments required before your appointment.

Common Clinical Uses for Nervous System Evaluation

This scan is a valuable tool for diagnosing and managing a wide range of nervous system conditions. It is frequently used to identify areas of reduced blood flow in patients who have had a stroke or transient ischemic attack (TIA), locate the seizure focus in people with epilepsy, and assess patterns of brain activity to support diagnoses of dementia including Alzheimer’s disease. It may also be used to evaluate traumatic brain injury, brain tumors, and chronic cerebrovascular disease to guide treatment decisions and monitor disease progression over time.

What to Expect During Your Scan

The entire scanning process takes approximately 10 minutes, and you will lie on a padded table that moves slowly through the opening of the gamma camera. You will need to stay as still as possible during the scan to ensure clear images, but you will be able to breathe normally and communicate with the technologist at all times. There is no enclosed, tight space involved in this test, so there is no risk of claustrophobia, and you can return to all your normal activities immediately after the scan is complete.