abbreviation for computerized tomography scan: a medical test that involves using X-rays to create a three-dimensional image (= appearing to have length, width, and height) of the inside of the body
She had a CT scan that showed a suspicious mass.
A CT scan should probably be done in this case.
Synonym: CAT scan
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Only one of my tumours showed up on a CT scan.
He was sent to a local hospital for a CT scan that came back negative.
A CT scan of the abdomen revealed a large hiatal hernia.
He was referred to a neurologist, who ordered a CT scan.
Unlike typical X-rays, which primarily show bones, CT scans show the body's tissues in detail.