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目的 探讨不同浓度对比剂直接法螺旋CT胆道造影对胆管解剖的显示效果及胆系疾病的诊断价值。方法 对 11例阻塞性黄疸和 10例胆系术后患者 ,通过经皮肝穿胆道引流管 (PTCD)或胆系术后留置的引流管注入1%、5 %、10 %三种浓度的泛影葡胺进行直接法螺旋CT胆道造影检查 ,并进行最大密度投影 (MIP)和表面遮盖(SSD)重建 ,多层面和多角度观察胆管解剖。结果 5 %浓度组 2 1例病人共显示尾叶胆管 6 7支 ,平均 3 19± 0 81,其中 15例清晰显示出三级以上胆管 ,明显高于 1%和 10 %浓度组。结论 直接法螺旋CT胆道造影以 5 %的泛影葡胺效果最佳 ,是诊断胆系疾病的可靠方法。
Objective To investigate the effect of direct contrast helical CT cholangiography with different concentrations of contrast medium on biliary duct anatomy and the diagnostic value of biliary tract diseases. Methods 11 cases of obstructive jaundice and 10 cases of biliary postoperative patients were injected with 1%, 5%, 10% of pancreas through percutaneous transhepatic biliary drainage (PTCD) Meglumine diazepam for direct helical CT cholangiography and maximum density projection (MIP) and surface reconstruction (SSD), multi-level and multi-angle observation of bile duct anatomy. Results Twenty-seven patients in 5% concentration group showed a total of 67 caudal bile ducts with an average of 3 19 ± 0 81. Fifteen of them showed clear grade III or higher bile duct, which was significantly higher than that of 1% and 10% group. Conclusion The direct method of spiral CT cholangiography with 5% of the best diatrizoate meglumine is a reliable method of diagnosis of biliary diseases.