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PET scan

[ pet-skan ]
/ ˈpɛt ˌskæn /
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noun Computers, Medicine/Medical.
an image obtained by positron emission tomography, using a PET scanner.
an examination performed with a PET scanner.
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Origin of PET scan

First recorded in 1975–80; PET + scan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use PET scan in a sentence

Scientific definitions for PET scan

PET scan
[ pĕt ]

Short for positron emission tomography scan. A cross-sectional image of a metabolic process in a human or animal body produced by positron emission tomography.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for PET scan

PET scan

Acronym for positron emission tomography, a medical test that is especially useful in showing how tissue or an organ is functioning, as opposed to just showing structure. In a PET scan, radioactive atoms are introduced into the body, where their chemical behavior is exactly the same as similar nonradioactive atoms. The positrons emitted when these nuclei decay collide with electrons in surrounding tissue, producing gamma rays that can then be detected by instruments outside the body.

notes for PET scan

A PET scan can show the blood flow through the brain, areas of high metabolic activity that indicate potential tumors, as well as areas of damaged heart tissue.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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