Another test, called a voiding cystourethrogram or a VCUG, can show how urine moves through the ureterovesical junction.

另一项检查，称为排尿性膀胱尿道造影（VCUG），能显示尿液流经输尿管膀胱连接部的情况。

In a voiding cystourethrogram, a contrast dye is injected into the bladder through a catheter, and x-ray images are taken to see if the dye moves from the bladder up into the ureters and kidneys.

在VCUG检查中，通过在尿道中放置的导管向膀胱注射造影剂，拍摄x光片观察造影剂是否从膀胱上行进入输尿管和肾。