磁共振尿路造影诊断儿童先天性泌尿道畸形的意义

Significance of MR urography in congenital urinary tract malformation of children

目的 探讨磁共振尿路造影 (MRU)技术在诊断儿童先天性泌尿道畸形中的应用价值。方法 回顾性分析 2 4例儿童先天性泌尿道畸形患者 ,采用快速自旋回波 (TSE)行MRU检查 ,并与IVP和手术结果对照。结果 2 4例中单侧性 2 0例 ,双侧性 4例。MRU的原始图象及MIP图象清晰地显示梗阻的部位及程度 ,结合常规MRI ,诊断符合率达 88%。结论 MRU这一无创性水成像技术 ,能显示无功能性肾脏的集合系统 ,并兼有无X线辐射、无需碘造影剂等优点。

Objective To appraise the utility of MRU in congenital urinary tract malformation of children. Methods 24 cases of congenital urinary tract malformation in pediatric patients were analyzed retrospectively, using fast TSE for MRU and comparing results with IVP and operative pathology.Results There were 20 cases of unilateral lesion and 4 bilateral lesions among the 24 cases. Raw data of MRU and MIP could show the location and degree of obstruction. Correct rate was high up to 90%.Conclusion MRU has the advantages of non invasiveness, no ionizing radiation, no contrast agent needed and provides important diagnotic in congenital urinary tract malformation of children. (Shanghai Med J, 2000,23∶169 171)