Abstract: Objective To explore the imaging manifestation of portal collateral vessels by CT angiography in patients with liver cirrhosis. Methods A retrospective study were carried out in 216 patients with cirrhotic portal hypertension,who were treated in our hospital from January 2013 to January 2014. The clinical data,CT portal angiography and three dimensional reconstruction image of portal collateral vessels in all patients were analyzed. Results The distribution,pathway and anatomy of portosystemic collateral vessels were well shown by CT portal angiography in all 216 patients;Among them,there were 172（79.63%） patients with left gastric varices,100（46.30%） with lower esophageal varices,51 cases（23.61%） with paraesophageal varices,50 cases （23.15%） with gastro-renal shunt and/or splenorenal shunt,and 36 cases （16.67%） with paraumbilical varices and varicosity of abdominal wall;There existed significant difference in the diameter of portal vein and splenic vein between patients with gastro-renal shunt and/or splenorenal shunt [（12.64±1.12） mm and（18.72±3.48） mm,respectively] and patients without shunt [（19.56±5.64）mm and（13.47±2.35）mm,respectively,P<0.05]. Conclusion CT portal angiography can clearly show the distribution and severity of collateral vessel in patients with cirrhotic portal hypertension,which can help accurate diagnosis.

Key words: Liver cirrhosis, Portal hypertension, CT angiography, Portal vein