Baron R L, Stanley R J, Lee J K, Koehler R E, Melson G L, Balfe D M, Weyman P J
Radiology. 1982 Oct;145(1):91-8. doi: 10.1148/radiology.145.1.7122903.
A total of 103 consecutive patients with suspected biliary obstruction were studied using both computed tomography (CT) and ultrasound (US) to evaluate the relative accuracy of the methods. In 47 patients with confirmed obstruction, CT and US were comparable accurate in differentiating obstruction from nonobstruction. The precise level of obstruction was identified by CT in 88% and by US in 60%; the cause of obstruction was accurately predicted by CT in 70% and by US in 38%. Both methods detected useful additional information, such as cholelithiasis or retroperitoneal adenopathy. The authors use US as a screening examination; if there is doubt about the level and cause of sonographically demonstrated obstruction, CT has proved to be an accurate means of further evaluation.
对103例连续的疑似胆道梗阻患者进行了研究，采用计算机断层扫描（CT）和超声（US）来评估这两种方法的相对准确性。在47例确诊为梗阻的患者中，CT和US在区分梗阻与非梗阻方面的准确性相当。CT能确定88%的梗阻确切部位，US能确定60%；CT能准确预测70%的梗阻原因，US能准确预测38%。两种方法都能检测到有用的额外信息，如胆结石或腹膜后腺病。作者将US用作筛查检查；如果对超声显示的梗阻部位和原因存在疑问，CT已被证明是进一步评估的准确手段。
