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PET Scanner

Photograph of a PET scanner

Photo courtesy of Siemens Medical Solutions. All rights reserved.

Positron emission tomography (PET) is a test that uses a special type of camera and a tracer (radioactive chemical) to look at organs in the body.

During the test, the tracer liquid is put into a vein in your arm. The tracer moves through your body, where much of it collects in the specific organ or tissues. The tracer gives off tiny positively charged particles (positrons). The camera records the positrons and turns the recording into pictures on a computer.

A PET scan may be used to look for cancer, check blood flow, or find out how well organs are working.

By Healthwise Staff
Primary Medical Reviewer Adam Husney, MD, MD - Family Medicine
Specialist Medical Reviewer Howard Schaff, MD - Diagnostic Radiology
Last Revised July 28, 2011

Last Revised: July 28, 2011

Author: Healthwise Staff

Medical Review: Adam Husney, MD, MD - Family Medicine & Howard Schaff, MD - Diagnostic Radiology

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