平衡快速梯度回波序列诊断主动脉夹层的临床应用价值

目的评价平衡快速梯度回波序列（balallce-FFE，B—FFE）在诊断主动脉夹层的临床应用价值。方法26例怀疑主动脉夹层的患者分别行快速自旋回波（TSE）和B-FFE检查，然后对TSET2WI序列与B-FFE序列的图像清晰度、血管显示主动脉夹层的范围、内膜片的形态、破口的位置、真假腔和附壁血栓以及与周围大血管的关系等检出情况进行分析比较。结果B—FFE序列的图像清晰度、血管显示及解剖显示均优于TSET2WI序列，并且在扫描时间上有很大优势。结论B—FFE序列能很好地显示主动脉夹层的范围、内膜片的形态、破口的位置、真假腔和附壁血栓以及与周围失血管的关系：扫描速度快，几乎无运动伪影，对较重或不能屏气的患者有明显优势，可作为主动脉夹层的重要检查手段。

The Clinical Value of Balance Fast Gradient Echo Sequence in Diagnosis of Aortic Dissection

Objective Evaluated the balance fast gradient echo sequence(balance-FFE,BFFE) in the diagnosis of aortic dissection and clinical application value.Method 26 cases of suspected aortic dissection were treated by fast spin echo(TSE) and B-FFE examination,and then on the TSE T2WI sequence and B-FFE sequence image sharpness,vascular revealed aortic dissection range,the film in the form of the breach,the true and false lumen,position and mural thrombus and the surrounding large vessels such as the relationship between the detection analysis and comparison.Result All aspects of sharpness,vascular anatomy display and display in B-FFE sequence image are better than those of TSE T2WI sequence,but also in the scanning time to more significant advantage.Conclusion B-FFE sequence can well display the range of aortic dissection,the film in the form of the breach,the true and false lumen,position and mural thrombus and the surrounding large vessels;fast scanning speed,almost without motion artifacts,the heavier or cannot breath-hold patients obviously unique advantage,can be used as a diagnosis of aortic dissection of the preferred imaging method.