【摘要】 目的探讨主动脉夹层(AD)在MR I上的表现特征,提高对本病MR I诊断的正确性。方法回顾性分析20例主动脉夹层患者的MR I表现及临床资料。结果主动脉夹层MR I表现为:直接征象:真假两腔和内膜片,主动脉夹层的破口,假腔内血栓形成;间接征象:主动脉及其分支增宽,胸腔积液和心包积液,累及大动脉瓣及主要血管支。结论MR I对主动脉夹层的诊断具有较高的敏感性和特异性,是一种无创、安全、有效的检查方法。更多还原

【Abstract】 Objective To evaluate the clinical value and improve the correctness of MRI in the diagnosis of aortic dissection.Methods The MRI manifestations in 20 cases of aortic dissection were analyzed retrospectively.Results The MRI manifestation: direct signs included intimal flap,double lumen,entry tears,thrombus formation in the false lumen,and indirect signs included aorta widened,pleural effusion and pericardial effusion,the major aortic branches and aortic valve were involved.Conclusion MRI is a non-invading and effective imaging method in the diagnosis of aortic dissection.更多还原