Imaging anatomic information from a cross-sectional plane of the body, each image generated by a computer synthesis of x-ray transmission data obtained in many different directions in a given plane. Definition of Computed Tomography: A scanning procedure using X-rays and a computer to detect abnormalities of the body's organs. CT Tomography in which computer analysis of a series of x-ray scans made of a bodily structure or tissue is used to construct a three-dimensional image of that structure. CT scan: Computed tomography scan. CT abbreviation stands for computed tomography. A computed tomography (CT or CAT) scan allows doctors to see inside your body. 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