Objectives: To explore the diagnostic value of brain stem auditory evoked potentials(BAEP) and transcranial doppler (TCD) in patients with vertebrobasilar insufficiency (VBI).

• 目的：探讨脑干听觉诱发电位(BAEP)及经颅多普勒超声(TCD)二项检查联合用于椎基底动脉供血不足(VBI)的诊断价值。