MRU及排泄性三维对比增强MRU在上尿路显像中的对比研究  

The Comparative Study of MRU and 3D Excretory Contrast Enhanced MRU in Visualization of Upper Urinary Tract

作　　者：莫茵[1] 孙学进[1] 何波[1] 田伟[1] 李颢[2] 顾青[1] 

机构地区：[1]昆明医学院第一附属医院影像中心,650031 [2]昆明医学院第一附属医院泌尿外科,650031

出　　处：《临床放射学杂志》2011年第8期1157-1161,共5页Journal of Clinical Radiology

基　　金：云南省教育厅科学研究基金项目(编号:09Y0161)

摘　　要：目的对比研究磁共振尿路造影(MRU)及三维对比增强磁共振尿路造影(3D-ceMRU)对上尿路显影能力的差别。资料与方法正常上尿路40侧,中度积水扩张上尿路16侧,重度积水扩张上尿路22侧皆行MRU及3D-ceMRU检查。对肾盏、肾盂及上、中、下段输尿管5个部分的两种扫描方式的图像质量分别进行评分。评分结果进行统计分析。结果正常肾盏及下段输尿管、中度积水扩张的上尿路、重度积水扩张的输尿管的MRU和3D-ceMRU图像质量评分差异无统计学意义(P>0.05);正常肾盂及上、中段输尿管、重度积水扩张的肾盂、肾盏的MRU和3D-ceMRU图像质量评分差异有统计学意义(P≤0.05)。结论 3D-ceMRU能较好地显示正常及轻度扩张的上尿路,而MRU能较好地显示重度积水扩张的上尿路。两种方法均能较好地显示中度积水扩张的上尿路。Objective To assess the difference of Magnetic Resonance Urography（MRU）and 3D excretory contrast enhanced MRU（3D ceMRU）in visualization of upper urinary tract.Materials and Methods A total of 40 nondilated upper tracts in 20 health volunteers,16 moderately dilated upper tracts in 14 patients,and 22 markedly dilated upper tracts in 19 patients were evaluated with MRU and 3D-ceMRU.The upper tracts were divided into five segments：calyces,renal pelvis,proximal ureter,middle ureter and distal ureter.The imaging quality of MRU and 3D ceMRU was observerd and scored independently.Results There were no statistically differences between MRU and 3D ceMRU in visualization of the nondilated calyces,distal ureter,the moderately dilated upper tracts,the markedly dilated ureter（P0.05）.There were significant differences between MRU and 3D ceMRU in visualization of the nondilated renal pelvis,proximal ureter,middle ureter,the markedly dilated calyces,renal pelvis（P≤0.05）.Conclusion 3D-ceMRU is superior to MRU in displaying nondilated and mildly dilated upper tracts,while MRU is superior to 3D ceMRU in demonstrating markedly dilated upper tract.The two techniques are good at depicting moderately dilated upper tracts.

关 键 词：磁共振成像 尿路成像 三维成像 图像增强 对比剂 上尿路 

分 类 号：R445.2[医药卫生—影像医学与核医学]