磁共振尿路成像在泌尿外科疾病诊断中的应用

目的：探讨磁共振尿路成像（MRU）对泌尿外科疾病的诊断价值。方法：总结58例泌尿外科患者接受MRU检查的临床资料。结果：肾结核6例，MRU有典型征象；各种先天畸形27例，MRU均清晰显示其尿路形态；肾盂癌2例，MRU不能明确诊断，确诊需结合临床资料综合判断；输尿管癌10例，9例MRU输尿管梗阻部位有截断影；输尿管息肉2例，MRU显示输尿管梗阻部位可见泡沫样充盈缺损，但其影像不如逆行造影清晰；输尿管结石8例，MRU5例可见结石影，3例结石被高信号尿液掩盖；医源性输尿管狭窄3例，MRU均可显示梗阻部位及尿路扩张的形态。MRU检查尿路梗阻部位准确率为100％。结论：MRU用于泌尿外科疾病诊断，有其优势，也有其缺点，应正确合理应用。

Evaluation of MR urography in the diagnosis of Urologic diseases

Objective To evaluate the diagnostic efficacy of MR urography(MRU) in the diagnosis of urinary diseases. Methods MR urography was performed in 58 patients with urologic diseases,inclu- ding :renal tuberculosis(6),various congenital anomalies of urinary tract(27),renal pelvis carcinoma(2), ureteral carcinoma (10),ureteral polyp(2),ureteral calculi(8) and iatrogenic ureteral stricture(3). Results MR urography provided high-resolution images of the kidneys and urinary tract in all patients.The characteristics of renal tuberculosis,urinary tract dilation and the various anatomic anomalies were depicted well.MR urography was successful in localizing the level of obstruction in all of the 58 patients(100%),although MR urography alone could not reliably determine the cause of obstruction in some cases. Conclusions In diagnosing urinary diseases,MR urography has its advantages and limitations.It should be used appropriately in diagnosing urinary diseases.