The results of multiple complex ultrasound examinations performed in 180 patients after the OLT in early and late postoperative period are analyzed. The presence of biliary anastomotic failure (BAF) after OLT was diagnosed in 6.1 % of recipients. Sensitivity, specificity and diagnostic accuracy of BAF by dynamic ultrasound observation in our study were 100, 98 and 99 % respectively. The emergence of biliary hypertension (BH) due to strictures of anastomotic and nonanastomotic localization was diagnosed by ultrasound in 12.2 % of operated patients. According to the study of dynamic ultrasound investigation previous ischemic damage to liver transplant or vascular complications were detected in 82.3 % of patients with the BAF and in 30.4 % patients with evidence of the presence of strictures of the biliary tree
