PET Scan (Positron Emission Tomography Scan)

A PET scan is a medical imaging technique that helps doctors observe how tissues and organs function. It involves injecting a small amount of a radioactive substance, called a tracer, into the patient’s bloodstream. This tracer emits positrons, which are detected by the scanner to create detailed images. Because the tracer accumulates in areas with high activity—like tumors or brain regions involved in certain functions—the scan provides valuable information about metabolic processes and abnormalities. PET scans are commonly used in cancer detection, brain research, and to assess heart conditions, offering insights beyond what standard imaging shows.