Objective To study the diagnostic value of transcranial TCD MRA.BAEP and vertebral artery duplex ultrasonography in vertebral artery stenosis or variation.

• 摘要目的探讨椎动脉经颅多普勒(TCD)、磁共振动脉造影(MRA)、脑干诱发电位(BAEP)及椎动脉超声对椎动脉狭窄或变异的诊断价值。