retrograde urography

例句：

1. 1. This procedure is used to diagnose kidney and ureter problems.
   这种程序用于诊断肾脏和输尿管问题。
2. 2. The patient was given a contrast dye for the retrograde urography.
   患者接受了逆行尿路造影的对比剂。
3. 3. During the procedure, the doctor injected contrast material into the patient's bladder to visualizethe urinary system.
   在手术过程中，医生向患者的膀胱注入对比剂以可视化泌尿系统。