: 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
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
Abibu's only CT scan was done at a faraway military hospital.
—Sophia Li, NPR, 17 Aug. 2025
After a CT scan was performed, there were no findings of brain hemorrhaging.
—Danielle Bacher, People.com, 14 Aug. 2025
By comparison, a medical CT scan exposes the subject to between 200 and 1,000 millirems of radiation depending on the length and body location of the scan, according to the U.S. Environmental Protection Agency.
—Julia Jacobo, ABC News, 7 Aug. 2025
The coronary calcium scan, a painless CT scan that evaluates the risk of heart disease by measuring calcium deposits in the coronary arteries, has been proven to save countless lives.
—Bryant Stamford, The Courier-Journal, 2 July 2025
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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
Abibu's only CT scan was done at a faraway military hospital.
—Sophia Li, NPR, 17 Aug. 2025
After a CT scan was performed, there were no findings of brain hemorrhaging.
—Danielle Bacher, People.com, 14 Aug. 2025
By comparison, a medical CT scan exposes the subject to between 200 and 1,000 millirems of radiation depending on the length and body location of the scan, according to the U.S. Environmental Protection Agency.
—Julia Jacobo, ABC News, 7 Aug. 2025
The coronary calcium scan, a painless CT scan that evaluates the risk of heart disease by measuring calcium deposits in the coronary arteries, has been proven to save countless lives.
—Bryant Stamford, The Courier-Journal, 2 July 2025
Cite this Entry
“CT scan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/CT%20scan. Accessed 9 Sep. 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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