A PET Scan is a non-invasive investigation that looks at the activity of different parts of the body, rather than the structure. It uses a radioactive substance to highlight which parts of the body are using the most sugar. Cancers are highly active and use a lot of sugar, so they show up brightly on a PET scan. A PET scan is often used to find bits of a cancer that may have spread. Click Here For More Information about PET Scans
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