尿路梗阻磁共振水成像技术与逆行肾盂造影检查的对照观察

Comparative Sutdy of MR Urography and Retrograde Pyelography in the Diagnosis of Patients with Urinary Tract Obstructiive Diseases

目的:比较磁共振水成像(MRU)和逆行肾盂造影(RP)检查对尿路梗阻性疾病的诊断价值。方法:对15例尿路梗阻性病变患者进行MRU和RP检查,并经病理证实,对两者进行对照分析。结果:15例尿路梗阻中输尿管肿瘤2例,先天性狭窄6例,输尿管结石4例,输尿管炎性狭窄3例,MRU与RP均能清晰显示输尿管的梗阻部位,定位诊断准确率相似,梗阻病因确诊率MRU高于RP。结论:MRU对输尿管梗阻性病变的定位、定性诊断准确率高,且无创伤,可以替代RP检查。尤其是对不能耐受RP检查患者应为首选的检查方法。

Objective：To compare the diagnostic value of magnetic resonance urography （MRU） and retrograde pyelography （RP） in patients with obstructive urinary tract diseases. Methods： 15 patients with obstructive urinary tract lesions were examined with both MRU and RP at the same period and the diagnostic results with these two examination modalities were individually and correlatively compared witb. those of the pathological findings. Results： There were 2 cases of ureter tumors,6 cases of congenital ureter stricture, 4 cases of ureter calculi and 3 cases of inflammatory fibrous stricture in our collection of 15 cases, Both MRU and RP were able to show the obstructive sites at the ureter clearly,and the lesion localization accuracy rates of the two modalities were identical,however, MRU was higher than RP in specificity （pathological nature） diagnosis accuracy. Conclusion： Higher accuracy rates of lesion localization and nature specificity were acquired with non-invasive MRU than with RP in the examination of patients with obstructive ureter diseases. MRU was believed capable of replacing RP as a role of imaging examination and the first choice of imaging modality in patients with obstructive ureter diseases,especially in those who were contraindicated to and intolerant of RP.