3-dimensional Thin Section Dynamic Contrast Enhanced MR Scanning in the Diagnosis and Typing of Budd-Chiari Syndrome

Objective:To evaluate the value of three-dimensional thin-section dynamic enhanced MR sequence in the diagnosis and typing of primary Budd-Chiari syndrome (BCS).Methods:14 patients with primary BCS underwent MR scanning,the sequence of liver acquisition with volume acceleration (LAVA) was performed.Image quality and the demonstration of inferior vena cava (IVC),hepatic vein (HV) and collaterals were evaluated.Results:Of the 14 patients,there were obstruction of inferior vena cava (4 cases,including membranous type 1 case and segmental type 3 cases),obstruction of hepatic vein (5 cases),mixed type of obstruction (5 cases).Caudate lobe enlargement (9 cases),inhomogeneous enhancement of hepatic parenchyma (8 cases).5 cases with accessory hepatic vein,7 cases with intrahepatic collateral vessels and 9 cases with extrahepatic collateral vessels were assessed.Conclusion:Normal anatomy of HV and IVC could be clearly depicted on 3D thin section dynamic enhanced MRI with LAVA technique,which is valuable in the diagnosis of the site,extent of primary BDS,and the collateral pathways and typing were well depicted.