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What is a PET Scan?

Woman in MRI Machine

A PET scan is like your radiologist's ace detective. The information gathered during the scan can help your doctor understand what's actually happening on the inside of your body.

This scan shows a radiologist your anatomy or body structure. It can be used to detect cancer, to determine if cancer has spread or how your body has responded to cancer therapy. In addition, a PET scan can be used to assess Alzheimer's, dementia, or certain cardiac conditions. This is a non-invasive, 90-minute painless procedure. During the PET scan, a small amount of radioactive sugar is injected into your blood stream.