Since 2021, aggregated from related topics
Positron emission tomography (PET) is a medical imaging technique that uses radioactive tracers to detect and measure various processes in the body, such as metabolism, blood flow, and neurotransmitter activity. It involves injecting a small amount of a radioactive substance, known as a radiotracer, into the body and then using a scanner to detect the positrons emitted as the tracer decays. PET is commonly used in clinical settings for diagnosing and monitoring conditions such as cancer, brain disorders, and heart disease. It can provide detailed information about the location and function of tissues and organs, making it a valuable tool in medical research and treatment planning.