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October Surprise 2024

Positron emission tomography (PET) scan – Mayo Clinic

A positron emission tomography (PET) scan is an imaging test that shows how your body’s tissues and organs are working. The test uses a small amount of a radioactive substance called a tracer. Depending on the reason for the test, the tracer may show how cells use sugar, how blood flows, or how some proteins or other substances attach to cells. PET scans can help find changes linked to …