Mitchell S E, Clark R A
AJR Am J Roentgenol. 1984 Apr;142(4):729-33. doi: 10.2214/ajr.142.4.729.
A comparison was made of sonography and computed tomography (CT) for the diagnosis of choledocholithiasis. Sonography correctly diagnosed nine of 49 patients with choledocholithiasis for a sensitivity rate of 18%. The accuracy rate for sonography was 19%; there were five false-positive examinations. CT correctly identified common duct stones in 26 of 30 patients for a sensitivity rate of 87%. The accuracy rate was 84%; there was one false positive. Sonography is limited in its ability to image calculi in the distal common bile duct. CT is effective for imaging common duct stones and is superior to sonography for diagnosing this cause of biliary obstruction.
对超声检查和计算机断层扫描（CT）诊断胆总管结石的情况进行了比较。超声检查在49例胆总管结石患者中正确诊断出9例，灵敏度为18%。超声检查的准确率为19%；有5例假阳性检查。CT在30例患者中正确识别出26例胆总管结石，灵敏度为87%。准确率为84%；有1例假阳性。超声检查对胆总管远端结石的成像能力有限。CT对胆总管结石成像有效，在诊断这种胆道梗阻原因方面优于超声检查。
