非强化螺旋CT新近被认为是检查继发于输尿管结石的泌尿系梗阻的重要手段,但这种技术有可能混淆输尿管结石和静脉石。在CT上,输尿管结石有时可能被一软组织带所环绕即软组织“边缘”征(soft-tissue“rim”sign),它代表水肿的输尿管壁。作者为确定“边缘”征鉴别输尿管结石和静脉石的敏感度和特异度以及“边缘”征的出现是否与结石的位置、大小、症状持续时间有关。应用螺旋CT扫描技 Non-enhanced spiral computed tomography (CT) has recently been identified as an important tool for examining urinary tract obstruction secondary to ureteral stones, but this technique may confound ureteral stones and vein stones. On CT, ureteral calculi can sometimes be surrounded by a soft tissue band called the soft-tissue “rim” sign, which represents the ureteral wall of the edema. The authors identified sensitivity and specificity of ureteral calculi and vein stones to determine “marginal” signs and whether the appearance of “margins” correlated with the location, size, duration of symptoms. Application of spiral CT scanning technology