Definition
Computed Axial Tomography—serial X-rays reconstructed by computer to create cross-sectional images, essentially a CT scan by its former name.
Example Usage
The CAT scan revealed a mesenteric ischemia requiring emergency surgery.
Origin
Acronym from 1970s terminology; now usually called 'CT scan' (Computed Tomography)
Fun Fact
CAT scans revolutionized diagnosis but deliver significant radiation; modern protocols minimize exposure through dose reduction.
Source: Radiology and medical imaging standards
Related Terms
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