经颅多普勒超声对椎-基底动脉供血不足的诊断及评定价值

The Diagnosis and Assessment Value of Transcranial Doppler Sonography for Vertebrobasilar Insufficiency

为探讨经颅多普勒超声对椎-基底动脉供血不足患者的诊断及评定价值，按临床诊断标准收集椎-基底动脉供血不足患者80例，对照组为年龄相近的健康人51例，采用MT－1000型彩色经颅多普勒超声仪对基底动脉、椎动脉、大脑后动脉、大脑前动脉和大脑中动脉的血流速度、搏动指数及血流频谱图像进行检测分析。结果：疾病组椎-基底动脉流速明显低于对照组（P＜0．001），且搏动指数值增高（P＜0．05）。疾病组经颅多普勒超声异常率为80％（64例／80例），以椎-基底动脉流速降低为主要特点。发作期异常率（89．3％）高于缓解期（65．4％）。提示：经颅多普勒超声可作为椎-基底动脉供血不足患者诊断及康复评定的可靠依据。

To explore the diagnosis and assessment values of transcranial Doppler sonography (TCD) for vertebrobasilar insufficiency (VBI), 80 patients with BVI based on the criteria of clinical diagnopis and 54 healthy volunteers were examined by MT-1000 type TCD. The blood flow velocities, pulsatility indexes and frequency spectrum of the basilar artery (BA), vertebral artery (VA). posterior cerebral artery (PCA), anterior cerebral artery (ACA)and middle cerebral artery (MCV) were detected and analyzed. The results showed that the blood flow velocltles of vertebrobasilar artery (VBA) in the patient group were much lower than in the control group and the former's PI values were higher. The abnormal rate in patient group was 80%. The main abnormal manifestation was decrease of blood flow velocities of VBI. The abnormal rate of attack (89. 3%) was higher than that of intermission (65.4%).It was concluded that TCD could provide valuable references for the diagnosis and rehabilitation assessment of VBI.