PET CT Scan
A positron emission tomography (PET) scan is an imaging test that allows your doctor to check for diseases in your body.
The scan uses a special dye that has radioactive tracers. These tracers are either swallowed, inhaled, or injected into a vein in your arm depending on what part of the body is being examined. Your organs and tissues then absorb the tracer.
When highlighted under a PET scanner, the tracers help your doctor to see how well your organs and tissues are working. The tracer will collect in areas of higher chemical activity, which is helpful because a higher level of chemical activity is commonly associated with disease. These areas of disease will show up as bright spots on the PET scan.
The PET scan can measure blood flow, oxygen use, how your body uses sugar, and much more.
A PET scan is typically an outpatient procedure. This means you can go about your day after the test is finished.
In the United States,around 2 million PET scans are performed each year.