Conclusion:CDE can show the renal blood perfusion and is useful in diagnosing,monitoring treatment and estimating prognosis of hydronephrosis.

• 结论：肾积水的肾脏CDE表现，反映了肾脏的血流灌注情况，对肾积水的程度、诊断、治疗监测和评估预后都有重要的意义。