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椎基底动脉供血不足(VBI)是中老年人的常见病,体征多呈一过性,通常依患者的主诉症状来诊断而缺乏客观依据。脑CT、MRI检查阳性率都较低,EEG和脑地形图的灵敏性和特异性也低,脑血管造影虽可发现血管异常病变,却不易普及。近年来应用经颅超声多普勒(TCD)了解颅内供血情况取得了较肯定效果。现将我们对50例VBI患者所做TCD检测结果报道如下。
Vertebrobasilar insufficiency (VBI) is a common disease in middle-aged and elderly people, and the symptoms are mostly transient. It is usually based on the symptoms of the patient to diagnose and lack of objective evidence. The positive rates of brain CT and MRI were low, and the sensitivity and specificity of EEG and brain topography were also low. Although cerebral angiography could detect abnormal vascular lesions, it was not easy to popularize. In recent years, the application of transcranial ultrasound Doppler (TCD) to understand the status of intracranial blood supply has made more positive results. Now we have 50 cases of VBI patients TCD test results reported below.