Interobserver Variation of Colonic Polyp Measurement at Computed Tomography Colonography.

摘要: Abstract Background The concept of “advanced polyps” is well accepted and defined as polyps ≥10 mm and/or those having a villous component demonstrating areas dysplasia. Of these parameters, computed tomography colonography (CTC) can only document size. management CTC-detected to recommend excision if feasible, whereas the “intermediate” (6–9 mm) more controversial, interval surveillance may be acceptable. Therefore, distinction between 6-9 mm important. Methods Datasets containing 26 originally reported 8-12 mm in diameter were reviewed independently by 4 CTC-accredited radiologists. Observers tabulated largest measurement for each polyp on axial, coronal, sagittal, endoluminal views at lung-window settings. These measurements also compared determined computer-aided detection (CAD) software. Results interobserver reliability intra-class correlation coefficient (ICC) sagittal projection was 0.80 (“excellent” category Hosmer Lemeshow [2004]), 0.71 axial (“acceptable”), 0.69 0.41 (“unacceptable”). sagittal/axial/coronal gave best with smallest variance (ICC = 0.80; 95% CI 0.67–0.89). For 8 polyps, least one radiologist's placed different colleague. majority CAD significantly overestimated readings manual an average difference 1.6 mm (P  Conclusion It apparent that around cutoff point 10 mm “advanced” performance variable.