所有患者术前均采用三维时间飞跃（3D-TOF）序列技术经磁共振成像（MRI）检查脑血管病变情况；
The conditions of cerebrovascular diseases were examined by three dimensional time of flight (3D-TOF) nuclear magnetic resonance (MRI).
所有患者术前均采用三维时间飞跃（3D-TOF）序列技术经磁共振成像（MRI）检查脑血管病变情况；
The conditions of cerebrovascular diseases were examined by three dimensional time of flight (3D-TOF) nuclear magnetic resonance (MRI).
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