The Application Value of Ultrasound Examination in Biliary Stricture after Liver Transplantation
Objective:To explore the application value of ultrasound examination for biliary stenosis after liver transplantation.Methods:A retrospective analysis was conducted on 157 patients who under-went liver transplantation in our hospital from January 2020 to March 2023.Among them,20 patients de-veloped postoperative biliary stenosis,and 38 patients without complications were selected as the control group.The peak flow velocity of the right hepatic artery,resistance index of the right hepatic artery,accel-eration time of the right hepatic artery,and biliary ultrasound images were compared between the two groups,and the sensitivity and specificity of ultrasound in diagnosing biliary stenosis after liver transplan-tation were analyzed.Results:The postoperative right hepatic artery resistance index of patients with bili-ary stenosis was significantly lower than that of the control group(P＜0.05).There were no significant dif-ferences in the peak flow velocity and acceleration time of the right hepatic artery between patients with biliary stenosis and the control group(P＞0.05).The incidence of various abnormalities detected by ultra-sound was significantly higher in patients with biliary stenosis compared to the non-complication group(P＜0.05).The diagnostic criteria for intrahepatic bile duct dilation,enhanced echogenicity of the bile duct wall,thickening of the common bile duct wall,and poor perfusion of the bile duct wall on contrast-enhanced ultrasound were used.The sensitivity and specificity of ultrasound in diagnosing biliary stric-ture after liver transplantation were 60.0％ and 79.0％,respectively.Conclusion:Ultrasound examination can provide reliable data included the diagnosis and treatment of biliary strictures in patients after liver transplantation.
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