Abstract
This study aimed to investigate the diagnostic accuracy of computed tomography (CT) colonography compared with that of colonoscopy for patients with positive fecal occult blood test results. During a routine health check-up, 120 participants who had positive fecal occult blood test underwent CT colonography and colonoscopy on the same day. For bowel preparation and tagging, we used 2000 mL of polyethylene glycol solution (Niflec) containing 60 mL of diatrizoate meglumine and diatrizoate sodium solution (Gastrografin). For each patient, sensitivity and specificity of CT colonography for polyps of ≥6 mm were 85.7% (30/35) and 95.3% (81/85), respectively. For polyps of ≥10 mm, they were 100% (17/17) and 98.1% (101/103), respectively. CT colonography demonstrated reliable accuracy in the examination of patients with positive fecal occult blood test. These results indicate that CT colonography can be used for detailed examination of these patients.
