CAT scan:
Computerized axial tomography (CAT) scanning adds X-ray images with the aid of a computer to generate cross-sectional views anatomy. It can identify normal and abnormal structures and be used to guide procedures. CAT scanning is painless. Iodine-containing contrast material is sometimes used in CAT scanning. If you having a CAT scan and are allergic to iodine or contrast materials, you should notify your physicians and radiology staff.
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