(colonography) n. imaging of the colon. CT colography uses *computerized tomography to obtain multiple *axial thin-slice images (usually less than 3 mm thick), which can be electronically reformatted in two or three dimensions (see multiplanar reconstruction). It has the added advantage of visualizing all the other abdominal organs. Although less invasive than *colonoscopy, it cannot be used for biopsies or therapeutic procedures. MR colography, using *magnetic resonance imaging, is becoming more commonplace; its advantage over CT colography is that the patient is not exposed to irradiation.... colography
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