Abstract: Objective The aim of this study was to investigate the auxiliary assistance of MR venography (MRV) for digital subtraction angiography (DSA)-guided interventional therapy in the treatment of patients with Budd-Chiari syndrome(BCS). Methods 120 patients with BCS were admitted to our hospital between March 2014 and March 2019, and underwent 3.0 T MRV. All patients received interventional therapy under DSA guidance. Results The MRV showed 7.5% and 25.0% of the dangerous communicating branches and occlusive ends of inferior vena cava, significantly lower than 40.0% and 60.0% by DSA (P<0.05), and 95.0%, 80.0%, 75.0% and 52.5% of right, middle and left branches of hepatic vein, and accessory hepatic vein, respectively, all significantly higher than 40.0%, 35.0%, 30.0% and 17.5% by DSA (P<0.05), while there were no significant differences as for the demonstration of segment of inferior vena cava, stenosis, inferior vena cava occlusion, inferior vena cava membranous formation and thrombosis by the two methods (P>0.05); the interventional therapy was successful in 120 patients, for which, 21 cases (17.5%) by via femoral vein, 63 cases (52.5%) via right femoral veinand right internal jugular vein, 3 cases (2.5%) via percutaneous hepatic vein combined with internal jugular vein, and 33 cases (27.5%) via right internal jugular vein. Conclusion The MRV could clearly show the obstruction of blood vessels in patients with Budd-Chiari syndrome before interventional therapy, which might help the correct operation under DSA angiography in clinical practice.

Key words: Budd-Chiari syndrome, Magnetic resonance venography, Digital subtraction angiography, Interventional therapy