Pedrosa C S, Casanova R, Rodriguez R
Radiology. 1981 Jun;139(3):627-34. doi: 10.1148/radiology.139.3.7232729.
Computed tomographic (CT) scans of 67 cases of obstructive jaundice were analyzed to determine the value of CT in detecting the level of obstruction. The cases were divided into four groups by anatomical segments, according to the number of visualized hypodense ringlike structures produced by the dilated bile duct, as seen in axial sections made 1 cm apart. Gallbladder size, dilatation of intrahepatic biliary radicals and the pancreatic duct, visualization of tumor masses, and condition of the bile duct below the obstruction were other variables used to determine the level of obstruction. The overall accuracy of CT in determining the exact level has been 97%. The most reliable indicator is the number of rings, which has excellent correlation with the results of direct cholangiography. The diagnostic value of all other variables is limited to specific cases.
分析了67例梗阻性黄疸患者的计算机断层扫描（CT），以确定CT在检测梗阻部位方面的价值。根据在间隔1cm的轴向切片中所见的扩张胆管产生的低密度环形结构的数量，按解剖部位将病例分为四组。胆囊大小、肝内胆管和胰管的扩张、肿瘤肿块的可视化以及梗阻以下胆管的情况是用于确定梗阻部位的其他变量。CT确定确切梗阻部位的总体准确率为97%。最可靠的指标是环形结构的数量，它与直接胆管造影的结果具有极好的相关性。所有其他变量的诊断价值仅限于特定病例。
