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目的评价多层螺旋CT胆管阴性成像(N-CTC)及曲线平面成像(CPR)对胆道梗阻性疾病的应用价值。方法使用血管对比剂做增强扫描,扫描数据经工作站后处理,16例高位梗阻病例获得最小强度投影(M inIP)及表面遮盖法(SSD)图像,55例胆道梗阻病例进行多平面重建及曲线平面重建显示图像,分别分析各种处理的图像质量及梗阻定位定性诊断的能力。结果16例N-CTC中15例完成,均正确识别梗阻的部位,结合ASI定性准确率为80%(12/15)。55例患者均顺利完成CPR,定位诊断率为100%,定性诊断率为91%(50/55)。结论N-CTC适合于高位梗阻的病例,CPR显示胆管梗阻有很大优势,完全可以作为胆管疾病的常规检查方法。
Objective To evaluate the value of multi-slice helical CT cholangiography (N-CTC) and curve plane imaging (CPR) in the diagnosis of biliary obstruction. Methods Vascular contrast media was used for contrast-enhanced scanning. Scanning data were processed by workstation. Minimum intensity projection (MIP) and surface occlusion (SSD) images were obtained in 16 cases of high obstruction. 55 cases of biliary obstruction were treated with multiplanar reconstruction and curve plane The images were reconstructed to analyze the image quality of various treatments and the ability of qualitative diagnosis of obstruction localization. Results Fifteen of 16 cases of N-CTC were completed, all of which correctly identified the site of obstruction. The qualitative accuracy of ASI was 80% (12/15). All 55 patients successfully completed CPR, the localization diagnosis rate was 100% and the qualitative diagnosis rate was 91% (50/55). Conclusion N-CTC is suitable for patients with high obstruction. CPR shows great advantage of bile duct obstruction and can be used as routine examination of biliary tract diseases.