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  • Title: Comparison of virtual colonoscopy with conventional colonoscopy in detection of colorectal polyps.
    Author: Selçuk D, Demirel K, Ozer H, Baca B, Hatemi I, Mihmanli I, Korman U, Oğüt G.
    Journal: Turk J Gastroenterol; 2006 Dec; 17(4):288-93. PubMed ID: 17205408.
    Abstract:
    BACKGROUND/AIMS: To determine the sensitivity and specificity of multidetector computed tomography-based virtual colonoscopy for colorectal polyp detection by using conventional colonoscopy as the reference standard. METHODS: 48 patients with high risk for colorectal cancer underwent virtual colonoscopy followed by conventional colonoscopy. Examination results were compared with conventional colonoscopy, which served as the gold standard. RESULTS: Virtual colonoscopy correctly depicted 19 of 22 polyps (sensitivity, 86%) that were detected in conventional colonoscopy. All 4 polyps that were greater than 10 mm in size (100%), 6 of 7 polyps 6-9 mm in size (85%), and 9 of 11 polyps 5 mm in size or smaller (81%) were correctly depicted with virtual colonoscopy. Virtual colonoscopy had an overall sensitivity of 86% and specificity of 98%. CONCLUSION: Multidetector computed tomography-based virtual colonoscopy has excellent sensitivity for the detection of clinically important colorectal polyps.
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