肾结核的MRI表现(附12例分析)

目的:分析肾结核的影像学特征。方法:搜集2002年6月~2004年9月12例行MR检查诊断为肾结核的病例资料,均行平扫T1WI和T2WI,其中行增强扫描8例,8例行磁共振尿路成像检查。结果:肾结核的主要表现为肾皮质变薄,肾实质内脓腔或脓肿形成并围绕肾盏排列,肾盂扩张与肾盏扩张不成比例,壁增厚;增强扫描出现空洞壁和破坏肾盂、肾盏的点、线状强化。结论:MRI是诊断肾结核良好的影像学方法。

MR Imaging Features of Renal Tuberculosis:An Analysis of 12 Cases

Objective:To evaluate MRI features of renal tuberculosis.(Methods:)12 clinically diagnosed as renal tuberculosis and examined with MRI cases were collected during the period of 2002.6~2004.9.Conventional MR scans(T_1WI and T_2WI) were performed in all patients and further Gd-DTPA enhanced MR scanning or MRU were undergone respectively in 8 patients.Results:The major MRI signs of renal tuberculosis were thin renal cortex,cyst or cavity formation in renal parenchyma surrounding the calyces,pyelocaliectasis with various extents,and thickened walls of renal pelvis as well as calyces.On postcontrast scans,spotted and linear enhancement was seen on the walls of the cavity,renal pelvis and calyces.Conclusion:MRI is an effective imaging modality for diagnosing renal tuberculosis.