目的：评价核磁共振和彩色多普勒对椎动脉成像的价值。
Objective:To evaluate MRA and TCD Value in vertebral Artery.
目的：评价核磁共振和彩色多普勒对椎动脉成像的价值。
Objective: To evaluate MRA and TCD Value in vertebral Artery.
颈椎MRI椎动脉造影可显示寰椎侧移和旋转对椎动脉的影响；
The cervical MRI vertebral arteriography could display the effect of side displacement and rotation of lateral masses of atlas on vertebral artery.
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