多层螺旋CT胆道成像技术的临床应用

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。

Clinical Application of Multi - slice Helical CT Cholangiography

Objective To evaluate multi-slice helical CT negative cholangiography(N-CTC) and curved planar reformation(CPR) indiagnosis of obstruction of bile duct.Methods 71 patients were undergone multi-slice helical CT contrast scanning,of them,highobstruction N-CTC were obtained by using minimum intensity projection(MinIP) and surface shadow display(SSD) in 16 cases with high obstructive bile.55 cases with obstructive biliary duct were undergone CPR.The imaging quality,identification of the obstructed site and the nature were evaluated.Results N-CTC in 15 of 16 cases with high obstruction were successfully completed.The localizing accuracy and qualitative accuracy were 100% and 80%(12/15) respectively.In 55 with CPR imaging,the localizing accuracy and qualitative accuracy were 100% and 91%(50/55).Conclusion N-CTC fits for high obstructive biliary cases.As a safe and effective technology for displaying obstruction of bile duct,CPR may be used as a routine method.