MRU在小儿泌尿系梗阻的诊断意义

Diagnosis Significance of MRU in Ureteral Obstruction of Children

目的比较泌尿系梗阻的各种影像学诊断方法,讨论磁共振尿路造影(MRU)对泌尿系梗阻的诊断意义。方法分析23例患儿术前行MRU检查的资料,与B超、静脉尿路造影(IVU)、逆行尿路造影、CTU等影像学诊断资料进行对比。结果23例B超检查15例显示明确,静脉尿路造影有7例不显影或显影不清,CTU检查12例,其中8例显影,4例显影不清楚。MRU检查23例,均显影清楚。结论MRU能显示无功能性肾脏集合系统,还有无需碘造影剂的优点,在儿童泌尿系梗阻辅助检查中有着重要作用。

Objective To compare and evaluate diagnostic role of various imaging manifestation in the urinary tract obstruction. Methods 23 cases with urinary tract obstruction underwent B-ultrasound scanning, intravenous phelography(IVP), retrograde urography, CT scanning and magnetic resonance urography (MRU), and their findings were compared. Results B-ultrasound showed hydronephrosis in 15 cases of them, IVP provide for poor renal image in 7 cases. CT showed hydronephrosis in all 8 examined cases. MRU produced a good image in all cases. Conclusions Both B-ultrasound and IVP can be used as a first choice imaging for diagnosis of ureteral obstruction, MRU has the advantages of non-invasiveness, no ionizing radiation and could show the nonfunctional renal collecting tubules system.So it has important diagnotic value in congenital urinary tract obstruction of children.