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应用经颅多普勒超声（ＴＣＤ）观察５０例短暂脑缺血发作（ＴＩＡ）病人的脑血流动力学改变，总异常率８４％（４２／５０）。主要表现血流速异常增高，伴频谱紊乱及高调乐音性杂音（２８．５％，１２／４２），血流速度减低（２８．５％，１２／４２）及单纯频谱异常（４３％，１８／４２）。结果表明本病颅底动脉存在不同程度的血管病变及明显的脑血流动力学异常。ＴＣＤ对早期发现脑血管病变、判断脑缺血程度及对治疗前后的脑血流动力学监测等方面明显优于ＣＴ。
Transcranial Doppler ultrasound (TCD) was used to observe cerebral hemodynamic changes in 50 patients with transient ischemic attack (TIA), with a total abnormality rate of 84% (42/50). The main manifestations of abnormally high blood flow, with frequency spectrum disorders and high-profile music murmur (28.5%, 12/42), reduced blood flow velocity (28.5%, 12/42) and simple spectrum abnormalities (43%, 18 / 42). The results showed that there are varying degrees of vascular disease and obvious cerebral hemodynamic abnormalities in the skull base artery of this disease. TCD was superior to CT in early detection of cerebrovascular disease, judgment of cerebral ischemia and cerebral hemodynamics monitoring before and after treatment.