【摘要】 目的 探讨自身免疫性肝炎的MRI表现及其诊断价值。方法 对肝脏穿刺病理证实的56例自身免疫性肝炎的MRI表现行回顾分析。结果 56例肝穿前MRI诊断肝损伤为69.6%。术后回顾分析显示肝实质信号T₂WI弥漫性增高者56例（100%）,同反相位成像所有病例均未见脂肪肝,门脉周围水肿37例（66.1%）,胆囊窝积液29例（51.7%）,所有病例MRCP均无胆道梗阻表现,肝内外胆管变细及肝内胆管2级分支未见显影14例（25%）,脾大18例（32.1%）,肝硬化20例（35.7%）,腹水24例（42.9%）,胃底静脉曲张20例（35.7%）。结论 自身免疫性肝炎MRI表现无明显特异性,但MRI对肝损伤的发现有高度敏感性,可对其诊断、鉴别诊断及病情发展的了解提供有价值的信息。更多还原

【Abstract】 Objective To investigate MRI features and its diagnostic value in the autoimmune hepatitis（AIH）.Methods MR imaging features of AIH confirmed by heptic biopsy were reviewed retrospectively.Results In all of 56 cases,39 cases（69.6 %） diagnosed with liver damage by MRI before hepatic biopsy.After hepatic biopsy,the retrospective analysis of MR imaging showed hyperintensity of the liver on T₂WI,edema around the portal vein in 37 cases（66.1%）,effusion at gallbladder fossa in 29 cases（51.7 %）,splenomegaly in 18 cases（32.1 %）,cirrhosis in 20 cases（35.7%）,ascites in 24 cases（42.9%） and gastric varices in 20 cases（35.7%）,MRCP showed that there was no biliary obstruction in all cases,the second branches of intrahepatic bile duct in 14 cases（25%） were not showed.Conclusion The manifestations of autoimmune hepatitis on MRI are not specific,but MRI has high sensitivity for detecting the liver damage and it can be provide valuable informations for diagnosis,differential diagnosis and the development of AIH.更多还原