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colography


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(colonography) n. imaging of the colon, as an alternative to barium enema or colonoscopy, to detect polyps, tumours, and anatomical abnormalities. CT colography uses computerized tomography to obtain many 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 imaging all the other abdominal organs, including the liver. MR colography, using magnetic resonance imaging, is in development as a widely used clinical tool; it has the advantage over CT of no radiation dose for the patient.

Subjects: Medicine and Health.


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