MRU诊断上尿路梗阻性疾病的价值

Magnetic resonance urography in the diagnosis of upper urinary tract obstruction

目的 探讨磁共振尿路造影 (MRU)诊断上尿路梗阻性疾病的意义。 方法 5 9例上尿路梗阻性疾病患者接受检查 ,MRU为冠状位快速自旋回波T2 加权像。 结果 所有病例MRU尿路梗阻部位及扩张状况均显示良好 ,其中 5 4例经手术或病理确诊 ,仅 2例术前MRU误诊。 结论 MRU作为一种非侵袭性、无辐射损伤和不需造影剂的新技术 ,对上尿路梗阻性疾病的定位及定性诊断具有特殊价值 ,是一种可供选择的有临床实用价值的尿路成像方法。

Objective To evaluate the diagnostic efficacy of MR urography (MRU) in patients with upper urinary tract obstruction. Methods 59 patients with upper urinary tract obstruction were subjected to MRU performed in a heavily T 2 weighted fast echo pulse sequence in the coronal plane. Results The site of urinary tract obstruction and hydronephrosis were distinctly shown in all the 59 patients by MRU. 54 of them were confirmed by pathological or operative findings. Two patients were misdiagnosed by MRU before operation. Conclusions MRU is noninvasive and is free from ionizing radiation or iodinated contrast medium. As a new alternative technique, it is recommended for detecting the location pathogenesis of upper urinary tract obstruction.