门静脉系统造影能够直观显示门静脉系统血管解剖情况,在诊断肝外门静脉梗阻(extra-hepatic portal venous obstruction,EHPVO),选择门静脉分流血管方面有重要的作用。常用的血管造影方法为CT高压注射器辅助的造影,常用于放射科和血管介入科等专业科室,对于血管造影较少的外科常没有配备该设备。为实现造影的效果,很多外科医生在X线辐射下推注造影剂,对身体造成极大伤害。为此, Portal venography angiography can visualize the vascular anatomy of the portal system and plays an important role in the diagnosis of extra-hepatic portal venous obstruction (EHPVO) and portal vein shunting. Commonly used angiography method for CT high pressure syringe-assisted imaging, commonly used in radiology and vascular interventional department and other specialized departments, for less angiography surgical often not equipped with the equipment. In order to achieve the effect of imaging, many surgeons push the contrast agent under X-ray irradiation, causing great harm to the body. to this end,