: 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
O’Brien had to go for an X-ray and a CT scan, which revealed a two-centimeter shard of glass in her stomach.
—Alyce Collins, MSNBC Newsweek, 29 Nov. 2025
Two days after an ultrasound identified the tumor, the Broncos’ medical staff scheduled a CT scan for Singleton.
—Luca Evans, Denver Post, 29 Nov. 2025
At the hospital, Dylan’s CT scan wasn’t even finished before the anxious mom saw an ER doctor run by.
—Sam Gillette, PEOPLE, 24 Nov. 2025
His team will even go as far as doing a CT scan to see inside a battery and find out whether it is built correctly.
—Andrew Moseman, IEEE Spectrum, 22 Nov. 2025
Doctors say anyone age 50 or older, or anyone with risk factors, should talk to their health care provider about getting a CT scan.
—CBS News, 21 Nov. 2025
They’re typically obtained by technicians using either a CT scan, a computerized tomography scan, which uses X-rays, or an MRI, a magnetic resonance imaging scan that uses magnets to produce a clear image.
—Sandra Rose Salathe, Flow Space, 21 Nov. 2025
According to the report, a CT scan of Frehley’s head revealed multiple contusions, bone fractures to the back of his skull, hemorrhages, and a subdural hematoma (the type of bleeding that occurs in a person’s brain after a head injury).
—Jon Blistein, Rolling Stone, 10 Nov. 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
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Alyce Collins, MSNBC Newsweek, 29 Nov. 2025
Two days after an ultrasound identified the tumor, the Broncos’ medical staff scheduled a CT scan for Singleton.
—Luca Evans, Denver Post, 29 Nov. 2025
At the hospital, Dylan’s CT scan wasn’t even finished before the anxious mom saw an ER doctor run by.
—Sam Gillette, PEOPLE, 24 Nov. 2025
His team will even go as far as doing a CT scan to see inside a battery and find out whether it is built correctly.
—Andrew Moseman, IEEE Spectrum, 22 Nov. 2025
Doctors say anyone age 50 or older, or anyone with risk factors, should talk to their health care provider about getting a CT scan.
—CBS News, 21 Nov. 2025
They’re typically obtained by technicians using either a CT scan, a computerized tomography scan, which uses X-rays, or an MRI, a magnetic resonance imaging scan that uses magnets to produce a clear image.
—Sandra Rose Salathe, Flow Space, 21 Nov. 2025
According to the report, a CT scan of Frehley’s head revealed multiple contusions, bone fractures to the back of his skull, hemorrhages, and a subdural hematoma (the type of bleeding that occurs in a person’s brain after a head injury).
—Jon Blistein, Rolling Stone, 10 Nov. 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
Cite this Entry
“CT scan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/CT%20scan. Accessed 1 Dec. 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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