Nearby Words
PET scan
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PET scan
noun
1.
an image obtained by positron emission tomography, using a PET scanner.
2.
an examination performed with a PET scanner.
Origin:
P(ositron) E(mission) T(omography)
P(ositron) E(mission) T(omography)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Pet scan
is always a great word to know.
So is bezoar. Does it mean:
| a scrap or morsel of food left at a meal. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
American Heritage
Medical Dictionary
PET scan (pět)
n.
A cross-sectional image produced by a PET scanner.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
PET scan  (pět) Pronunciation Key
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary
PET scan definition
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.
Note: 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 American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Word Dynamo Rating For Pet scan
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