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Will pet scan detect all cancers?

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A positron emission tomography (PET) scan is an imaging test that uses a special dye with radioactive tracers. The tracers are either swallowed, inhaled, or injected into your arm. They help your doctor measure blood flow, oxygen use, and more. We’ll look into why it’s performed and how it compares to other tests. read more

I would like to know if PET scans detect all cancers. My husband, who passed 10-26-12, was diagnosed almost 2 years ago with a metastatic cancer of unknown primary in the retroperitoneal area. Genetic testing could not identify the cancer mass. read more

PET is a test for tissue activity. A scar is not very active and so the PET Scan does not see it. PET does not detect most infections. A cancer is rapidly expanding tissue and is "hot" on a PET Scan. Cancers grow as dividing tissue require nutrients. Cancers require sugar. In order to perform PET Scans a particular sugar is manufactured. read more

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INTRODUCTION to MEDICAL IMAGING - ppt video online download
Source: slideplayer.com

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