目的建立定量描述双侧椎动脉血流代偿性的方法。
Objective To establish the method to assess mathematically the compensation of flow in bilateral vertebralartery(BVA).
目的探索椎动脉单侧狭窄健侧椎动脉代偿时的MRA直径。
Objective To evaluate the MRA by measuring the diameter of the stenosis artery and the contralateral normal vertebral artery with unilateral stenosis.
目的：研究双侧椎动脉阻断后对小脑后下叶组织功能的影响。
Objective: To study the impact on posterior inferior lobe of cerebellum function after bilateral ligation of vertebrae artery.
双侧椎动脉MR血管成像及MSCT颈部血管成像未见异常。
Bilateral vertebral artery in the neck MR angiography and MSCT angiography were normal.
结果DS A检查有阳性发现者32例，其中单侧椎动脉受累19例，双侧受累13例。
Results DSA was positive in 32 patients with 19 ipsilateral and 13 bilateral.
方法：应用超声多普勒诊断仪检测1000例健康人双侧椎动脉，用SAS统计分析软件计算。
Method: 1000 healthy person's both side of vertebral arteries were measured by Doppler ultrasonographic instrument and the result of it was calculated with SAS statistical analysis software.
方法对30例无定位体征脑干梗塞患者行头颅MRI及双侧椎动脉超声检查，前者观察其梗塞部位、数量、大小；
Method Skull MRI and bilateral vertebral arteries ultrasound were undertaken in 30 patients with brain stem infarction without located sign.
结论椎动脉被膜的交感神经分布具有节段性及同侧性的分布特点。
Conclusion: the sympathetic nerves on the vertebral artery innervate in segments and on the same side.
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.
结果测量出寰椎后弓、侧块、椎动脉沟、后弓侧块螺钉通道的轴线长度，及后弓进钉点和进钉方向等参数。
Result the parameters of posterior arch, lateral mass, vertebral artery groove, axis length of screw pass via posterior arch and lateral mass, projection and direction of screw were measured.
目的：观察椎动脉颅外段的侧支吻合情况，并探讨其临床意义。
Objective: to observe the morphological pattern of collateral anastomoses of extracranial vertebral arteries and discuss its clinical significance.
结果20例患者被确诊为烟雾病，累及单侧或双侧的颈内动脉分支和椎动脉分支。
Results The final diagnosis of Moyamoya disease was confirmed in 20 cases, of them, the unilateral or bilateral branches of internal carotid and vertebral artery were involved.
结果术前MRI显示粗大扭曲的椎动脉(VA)偏向患侧，甚至对侧va也移位至患侧。
Results Preoperative MRI revealed that the big twisted vertebral arteries (VA) deviated to the affected side, and even the contralateral VA moved to the affected side.
结果术前MRI显示粗大扭曲的椎动脉(VA)偏向患侧，甚至对侧va也移位至患侧。
Results Preoperative MRI revealed that the big twisted vertebral arteries (VA) deviated to the affected side, and even the contralateral VA moved to the affected side.
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