Our CT Scan (Computerized Tomography) Main Article provides a comprehensive look at the who, what, when and how of CT Scan (Computerized Tomography)

Definition of CAT scan

CAT scan: Computerized axial tomography scan. CAT scanning is a painless X-ray test in which a computer generates cross-section views of a patient's anatomy. It can identify normal and abnormal structures, and it can be used to guide procedures. Iodine-containing contrast material is sometimes used in CAT scanning. A patient who is allergic to iodine or contrast materials and is scheduled to have a CAT scan should notify the physician and the radiology staff about the allergy. Also known as CT scan.


Last Editorial Review: 3/19/2012

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