FLAIR颅内椎动脉高信号在延髓梗塞诊断中的价值

目的:探讨低场强磁共振液体衰减反转恢复(fluid-attenuated inversion recovery,FLAIR)序列与其他序列搭配在延髓梗塞应用的临床价值,提高延髓梗塞的诊断水平。方法:搜集具有延髓梗塞及其后组颅神经损害为主要临床症状的MRI资料14例。采用西门子Concerto型0.2T磁共振,常规GRE-T1WI、T2WI、FLAIR和TOF-MRA检查,观察椎动脉闭塞的MRI征像。结果:8例(57.1%)FLAIR显示颅内椎动脉高信号,其中颅内椎动脉和基底动脉高信号3例。10例TOF-MRIA显示椎动脉严重狭窄或闭塞中有8例和FLAIR显示颅内椎动脉高信号一致。5例(35.7%)颅内椎动脉夹层,FLAIR均显示颅内椎动脉高信号。结论:FLAIR颅内椎动脉高信号并不意味着已经发生延髓梗塞,但有延髓梗塞的风险。FLAIR颅内椎动脉高信号是延髓梗塞的早期征像。

The diagnostic value of hyperintense intracranial vertebral artery (HIVA) on fluid-attenuated inversion recovery (FLAIR) images in the medulla oblongata infarction

Objective:To evaluate the application value of low field intensity fluid-attenuated inversion recovery(FLAIR)MR sequence combined with other sequences for demonstrating the medulla oblongata infarction,in order to improve the diagnotic level of the medulla oblongata infarction in MRI.Methods:There were 14 cases of the medulla oblongata infarction associated with clinical symptoms of posterocranial nerves damaged.With MR system(Siemens Concerto 0.2 tesla),underwent routine MR examination through GRE-T1WI,T2W...