Detectability of choledocholithiasis on CT: The effect of positive intraduodenal enteric contrast on portovenous contrast-enhanced studies.

摘要: Background/Aim: To retrospectively assess the accuracy of intravenous (IV) contrast-enhanced multidetector CT (MDCT) in choledocholithiasis detectability, presence and absence positive intraduodenal contrast. Patients Methods: Over a 3-year period, patients whom endoscopic retrograde cholangiopancreatography (ERCP) was performed within week from portovenous (PV)-enhanced abdominal were identified. The final cohort consisted 48 studies which entire common bile duct (CBD) length visualized (19 males, 29 females; mean age, 68 years). We identified two groups according to (n = 31) or 17) section thickness ranged 1.25 5 mm. Two radiologists, blinded clinical information ERCP results, independently evaluated images. Direct CBD stone visualization assessed previously predefined criteria, correlating with original electronic reports using findings as reference standard. A third reader reviewed all discordant results. diagnostic performances both observers interobserver agreement calculated for groups. Results: 77%–88% sensitivity, 50%–71% specificity, 71%–74% obtained group without contrast, versus 50%–80% 57%–71% 59%–71% With exception predictive value (PPV), performance parameters decreased contrast group, mostly affecting negative (NPV) (71%–78% vs 50%–67%). Conclusion: PV-enhanced MDCT has moderate detection. trend decreasing noted