PET scan
an image obtained by positron emission tomography, using a PET scanner.
an examination performed with a PET scanner.
Origin of PET scan
1Words Nearby PET scan
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use PET scan in a sentence
The doctor, to my grim surprise, was alarmed as well; he scheduled a PET scan.
In the world of the MRI and the PET scan, it seems that there is “more than one echo of the insalubrious past.”
Scientific definitions for 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
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
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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