: 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
Burak OzgurWhat 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
Adam Rogerscalled also CAT scan
see ct scanner
CT scanning
noun
Examples of CT scan in a Sentence
Recent Examples on the Web
The symptoms didn’t subside, so Emilia underwent a CT scan, an MRI, and a biopsy throughout August, before being given a devastating diagnosis.
—Alyce Collins, MSNBC Newsweek, 25 Oct. 2025
However, the location didn't have a pediatric department, so they were sent to Telford Hospital for a CT scan.
—Becca Longmire, PEOPLE, 20 Oct. 2025
Shares of the maker of MRI and CT scan machines are down more than 2% year to date.
—Jim Cramer, CNBC, 7 Oct. 2025
CaBot even conjured up a report of a CT scan that supposedly showed Williams’s bloated stomach.
—Dhruv Khullar, New Yorker, 22 Sep. 2025
For comparison, a single chest CT scan delivers around 7 mGy of radiation.
—Anna Broughel, Forbes.com, 7 Sep. 2025
However, the CT scan results came back clean, and his blood count was also checked, and there were no problems.
—Jennifer Hauser, CNN Money, 6 Sep. 2025
Gayken recounted a child who was scared and alone and about to undergo a CT scan, which looks at damage inside the body.
—Eduardo Cuevas, USA Today, 29 Aug. 2025
Fortunately, testing, which included a CT scan and MRI, ruled out that Jackson had suffered a stroke.
—Denise Crosby, Chicago Tribune, 17 Aug. 2025
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Alyce Collins, MSNBC Newsweek, 25 Oct. 2025
However, the location didn't have a pediatric department, so they were sent to Telford Hospital for a CT scan.
—Becca Longmire, PEOPLE, 20 Oct. 2025
Shares of the maker of MRI and CT scan machines are down more than 2% year to date.
—Jim Cramer, CNBC, 7 Oct. 2025
CaBot even conjured up a report of a CT scan that supposedly showed Williams’s bloated stomach.
—Dhruv Khullar, New Yorker, 22 Sep. 2025
For comparison, a single chest CT scan delivers around 7 mGy of radiation.
—Anna Broughel, Forbes.com, 7 Sep. 2025
However, the CT scan results came back clean, and his blood count was also checked, and there were no problems.
—Jennifer Hauser, CNN Money, 6 Sep. 2025
Gayken recounted a child who was scared and alone and about to undergo a CT scan, which looks at damage inside the body.
—Eduardo Cuevas, USA Today, 29 Aug. 2025
Fortunately, testing, which included a CT scan and MRI, ruled out that Jackson had suffered a stroke.
—Denise Crosby, Chicago Tribune, 17 Aug. 2025
Cite this Entry
“CT scan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/CT%20scan. Accessed 4 Nov. 2025.
Copy CitationMedical 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
David Wallis, The New York TimesThe CT scan showed dilation of the ventricles, the fluid-filled cavities in the brain.—Burak Ozgur, Discover
Burak Ozgur, DiscoverThe CT scan shows a large mass within the lumen of the ascending colon.—The New England Journal of Medicine
The New England Journal of MedicineWhat 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
Adam Rogers, Harvard Medical Health Lettercalled also CAT scan
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