pyelography

例句：

1. 1. The patient underwent a pyelography to diagnose the cause of his urinary tract infection.
   患者接受了尿路造影术以诊断其泌尿道感染的原因。
2. 2.The procedure involves inserting a special dye into the patient's bladder and then using X-rays to visualize the ureters and kidneys.
   该程序包括将一种特殊的染料注入患者的膀胱，然后使用X光来可视化输尿管和肾脏。
3. 3. Pyelography is an important diagnostic tool for evaluating patients with urinary tract problems.
   尿路造影术是评估患有泌尿系统问题的患者的重要诊断工具。