What Is a PET Scan?

 


A PET scan is a medical imaging technique that uses radioactive substances, called radiotracers, to visualize and measure changes in metabolism (the chemical processes that take place in cells to keep the body functioning normally). This includes evaluating where blood flow is being directed, where energy is being consumed, and how waste products are being eliminated.4

A PET scanner is comprised of a table that moves in and out of a doughnut-shaped or tube-shaped port that houses the detection apparatus.5

PET scans have several different medical uses, including:6

Different radiotracers, delivered intravenously, can provide different pieces of information based on the part of the body they target. Any abnormal changes in metabolism may suggest a medical concern. These are indicated by different colors or degrees of brightness on a PET image.5

By way of example, cancer cells have a higher metabolic rate as they grow faster than other cells and cause the formation of new blood vessels to feed them. These metabolic changes will appear as dark-colored spots on the PET scan.4

PET scans can often identify cancer sooner than a CT scan because of the rapid uptake of a sugar-based radiotracer by the fast-growing tumor.4click here

Location: Hyderabad, Telangana, India

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