October 29, 2008 Diagnostic Imaging. CT colonography offers number one choice after failed colonoscopy By Rebekah Moan An Italian investigation suggests virtual colonography is a better follow-up test for failed colonoscopy than a double-contrast barium enema. Dr. Lapo Sali of the radiodiagnostic section within the department of clinical physiopathology at the University of Florence and colleagues conducted a population-based screening program for colorectal cancer in Tuscany (World J Gastroenterol 2008;14:4499-4504).
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