磁共振泌尿系水成像及临床应用

目的：探讨磁共振泌尿系水成像（ＭＲＵ）技术的适应证及临床意义。方法：１３例泌尿系疾病患，在１．５Ｔ超导型ＭＲ扫描机上，用快速自旋波重Ｔ２ＷＩ加权序列扫描，图像经最大强度投影法重建，病变部位加做常规磁共振成像Ｔ１ＷＩ及Ｔ２２ＷＩ轴位及Ｔ１ＷＩ冠状位。结果；１３例ＭＲＵ影像均能满足诊断要求，其中１１例对肾盂积水，输尿管扩张迂曲，狭窄及梗阻部位显示极好。只有２例单纯性血尿患显示较差。

Technique and clinical application of magnetic resonance urography

AIM: To evaluate the technical methods and clinical application of magnetic resonance urography (MRU). METHODS: 13 patients with urinary diseases were examined by 1.5 tesla MR machine using heavily T2 weighted turbo spinecho sequence with maximum intensity projection(MIP) method. T1W,T2W axial and T1W coronal imagings were made at the same position of the diseases. THZRESULTS: The imagings of all the 13 MRU were satisfactory for the diagnosis, of which 11 cases displayed clearly the position of the stricture and obstrution, dilatation and tortuosity and only 2 cases of hematuria with less satisfactory result. CONLUSION: MRU was suitable for the diagnosis of urecteral stricture and obstruction, especially in patients in old age or in poor health, and iodine allergy patients or IVP negative patients. The combination of MRU with MRI can improve the qualitative diagnosis as MRI can clearly display the renal contour and renal corticomedullary struction.