SPECT imaging, also known as Single-Photon Emission Computed Tomography, is a type of nuclear imaging test that uses gamma rays and a special camera to create 3-D pictures of your body. A SPECT scan is often used to show how your organs are working, primarily the heart at (myocardial perfusion studies) at rest and exercise to understand the effect of physical stress on the heart. Likewise, SPECT imaging can be used to view blood flowing through the brain. SPECT scans can be useful in determining which parts of the brain are being affected by dementia, seizures, epilepsy, and head injuries. Similar to a PET scan, you will receive a small amount of radioactive tracer delivered intravenously before laying down on a scanner table while the camera rotates around you, taking “pictures” of the tracer’s location. This information is then interpreted by a physician, who will provide you with information on your diagnosis.