The following steps occur during a PET scan:You receive an IV injection of a radiotracer that contains a safe amount of a radioactive drug. …You sit in a chair for about an hour while the radiotracer moves through your bloodstream. …In approximately one hour,your organs and tissues absorb the radiotracer.If you are getting a PET/CT scan,you may also get an IV injection of a contrast dye. …More items…
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What is the purpose of a PET scan?
PET Scan Menu. A positron emission tomography (PET) scan is a type of imaging test that helps doctors see how the organs and tissues inside your body are actually working. In a PET scan, a very small dose of a radioactive chemical, called a radiotracer, is injected into the vein of your arm.
How long does a PET scan take to produce?
During a positron emission tomography (PET) scan, you lie on a narrow table that slides into a doughnut-shaped hole. The scanner takes about 30 minutes to produce detailed images of metabolic activity in your tissues and organs.
What is a combination PET-CT scan?
Positron emission tomography (PET) scans detect early signs of cancer, heart disease and brain disorders. An injectable radioactive tracer detects diseased cells. A combination PET-CT scan produces 3D images for a more accurate diagnosis.
What happens during a PET scan of the brain?
PET scans can be used to evaluate certain brain disorders, such as tumors, Alzheimer’s disease and seizures. For your PET scan, a radioactive drug (tracer) will be put into your body. Because the amount of radiation you’re exposed to is small, the risk of negative effects from it is low. But the tracer might: