PET scan

noun

: a sectional view of the body constructed by positron-emission tomography
PET scanner noun
PET scanning noun

Examples of PET scan in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For Gibson, participation meant undergoing a tau PET scan to detect protein buildup in her brain, cognitive testing, blood work and that spinal tap. Barbara Bry, San Diego Union-Tribune, 26 Oct. 2025 The researchers used a special kind of PET scan to detect changes in acetylcholine levels in the anterior cingulate cortex, a brain region that's important for making decisions and detecting errors. Jon Hamilton, NPR, 22 Oct. 2025 But until recently, confirming or excluding an Alzheimer’s diagnosis would require a referral to a neurologist and possibly a spinal tap or PET scan. Tom Gavin, EverydayHealth.com, 20 Oct. 2025 But PET scans are invasive, costly and time-consuming, Jensen told CNN. Kristen Rogers, CNN Money, 12 Oct. 2025 See All Example Sentences for PET scan

Word History

First Known Use

1980, in the meaning defined above

Time Traveler
The first known use of PET scan was in 1980

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Cite this Entry

“PET scan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/PET%20scan. Accessed 29 Oct. 2025.

Medical Definition

PET scan

noun
: a sectional view of the body constructed by positron-emission tomography
PET scanning noun
Last Updated: - Updated example sentences
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