: a cross-sectional, three-dimensional image of an internal body part produced by computed tomography chiefly for diagnostic purposes
The CT scan showed dilation of the ventricles, the fluid-filled cavities in the brain.Burak Ozgur
What distinguishes a CT scan from a conventional x-ray is its geometry. … Measurements are collected and assembled by a computer into images that correspond to anatomical slices of the body.Adam Rogers

called also CAT scan

see ct scanner
CT scanning noun

Word History

Etymology

computerized tomography

First Known Use

1974, in the meaning defined above

Time Traveler
The first known use of CT scan was in 1974

Dictionary Entries Near CT scan

Cite this Entry

“CT scan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/CT%20scan. Accessed 19 Mar. 2024.

Kids Definition

CT scan

noun

Medical Definition

CT scan

noun
: a cross-sectional, three-dimensional image of an internal body part produced by computed tomography chiefly for diagnostic purposes
A CT scan detected a lesion on her jawbone …David Wallis, The New York Times
The CT scan showed dilation of the ventricles, the fluid-filled cavities in the brain.Burak Ozgur, Discover
The CT scan shows a large mass within the lumen of the ascending colon.The New England Journal of Medicine
What distinguishes a CT scan from a conventional x-ray is its geometry. … Measurements are collected and assembled by a computer into images that correspond to anatomical slices of the body.Adam Rogers, Harvard Medical Health Letter

called also CAT scan

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