SPECT imaging, or Single Photon Emission Computed Tomography, is a nuclear medicine imaging technique used to create three-dimensional images of tissues and organs inside the body. It involves injecting a radioactive tracer that emits gamma rays into the bloodstream, which are then detected by a gamma camera as the tracer moves through the body. SPECT imaging is often used to diagnose and monitor various medical conditions, including neurological disorders, cardiovascular diseases, and certain types of cancer. It provides valuable information about blood flow, metabolism, and cellular function in the body, allowing healthcare providers to make more accurate diagnoses and treatment plans.