128层螺旋CT泌尿系造影及其三维重建在下腔静脉后输尿管诊断中的应用

128-slice spiral CT urography and three-dimensional reconstruction in the inferior vena cava,ureter diagnosis

目的:总结下腔静脉后输尿管(retrocaval ureter,RU)的CT影像特点,并探讨CT泌尿系造影(CT urography,CTU)并多层面图像重建在腔静脉后输尿管术前诊断中的应用价值。方法:分析10例下腔静脉后输尿管患者的CT及其三维重建表现,观察总结病变输尿管的影像学特征。结果:10例患者均显影良好,诊断明确,动态延迟扫描容积重建(volume rendering,VR)均可以直观见到扩张的输尿管内造影剂充盈,呈"大喇叭状"或"萝卜根状"。结论:MSCTU及其三维重建可以直观显示输尿管和下腔静脉的解剖关系,具有无创、准确率高的特点,是诊断腔静脉后输尿管最好的方法。

Objective ：To summarize the inferior vena cava ureter CT image characteristics, and to explore the CT urography （CTU） and muhi -dimensional image reconstruction retrocaval ureter（RU） preoperative diagnosis value. Methods ：To perform CT and three -dimensional reconstruction of the ureter patients in 10 cases of the inferior vena cava,summarize the characteristics of the imaging of the diseased ureter. Results： All 10 patients were developing good, clear diagnosis, dynamic delay the scanning volume rendering （VR）. Contrast agent filling the dilated ureter was ＂large horn- like ＂ or＂ radish root like＂ intuitive. Conclusion： For MSCTU three -dimensional reconstruction can visualize anatomical relationship of the ureter and the inferior vena cava, with non - invasive, high accuracy, ureter best diagnostic vena cava.