CT尿路造影(CTurography,CTU)是由Zanowitz等[1]于1985年首先应用于研究泌尿系统感染的检查方法。其原理是经静脉注入对比剂后,由于肾脏的分泌功能使得对比剂在肾盏、肾盂、输尿管及膀胱内充盈,利用CT对受检部位进行连续的扫描,将获得的原始图像经计算机处理后,进行三维重组,从 CT urography (CTU) was first applied by Zanowitz et al. [1] in 1985 to study urinary tract infections. The principle is that after the contrast agent is injected into the vein, the contrast agent is filled in the calyx, the renal pelvis, the ureter and the bladder due to the secretion function of the kidney. The scanned images of the examined site are continuously scanned by the CT, and the obtained original image is processed by a computer , Three-dimensional restructuring, from