鉴于椎－基底动脉供血不足这一多发常见病长期以来缺乏客观诊断标准，我们在５６例正常对照组和６２例病变组进行了经颅超声、彩超、脑干听觉诱发电位、横突孔ＣＴ和磁共振血管造影检查。上述各项检查阳性率分别是９０％，８８％，７１．４％，７６．２％和２２％。本研究确立了超声诊断之量化标准。通过各种检查方法的互相比较，认为超声联合使用是该病理想的检查方法，其阳性率高达９６．７％。 In view of the lack of objective diagnostic criteria for the long-standing common disease of vertebrobasilar insufficiency, we performed transcranial ultrasound, color Doppler ultrasound, brainstem auditory evoked potential, and transverse CT CT in 56 normal controls and 62 lesions. And magnetic resonance angiography. The positive rates of these tests were 90%, 88%, 71.4%, 76.2% and 22% respectively. This study established the quantitative criteria for the diagnosis of ultrasound. Through a variety of inspection methods compared with each other, that the combination of ultrasound is the ideal pathological examination, the positive rate as high as 96.7%.