Conclusion When the patients was hypersensitivity for iodine or the patients was not suitable for IVU,the MRU was a complement technique.

• 结论MRU只在碘过敏实验阳性、IVU不显影及其它不适宜做IVU的患者才考虑，对做其它检查诊断与鉴别诊断有困难时，MRU可作为其补充。