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目的 :观察经颅多普勒 (TCD)诊断为颈内动脉 (ICA)狭窄或闭塞患者的频谱特点、临床表现 ,与影像学进行对照 ,并观察治疗后TCD变化。方法 :1 4例患者经TCD诊断并经数字减影血管造影 (DSA)或磁共振血管成像 (MRA)。治疗后复查 9例。结果 :大脑中动脉平均血流速度 <1 5cm/s的 4例患者梗塞面积大、症状重、预后差。脉动指数等指标的下降比流速更敏感。TCD与DSA全部符合 ,与MRA符合率为 87 5% ( 7/8)。结论 :TCD对ICA狭窄或闭塞的诊断准确性较高 ,可作为临床筛选和治疗后定期复查的手段 ,并有助于判断预后。
OBJECTIVE: To observe the spectral characteristics, clinical manifestations, and imaging findings of transcranial Doppler (TCD) in patients with stenosis or occlusion of internal carotid artery (ICA) and to observe the change of TCD after treatment. METHODS: Totally 14 patients were diagnosed by TCD and underwent digital subtraction angiography (DSA) or magnetic resonance angiography (MRA). After treatment review in 9 cases. Results: Four patients with middle cerebral artery average blood flow velocity <15 cm / s had large infarction area, severe symptoms and poor prognosis. Pulse index and other indicators of decline is more sensitive than the flow rate. TCD and DSA all meet the MRA coincidence rate of 87 5% (7/8). Conclusion: The accuracy of TCD in the diagnosis of ICA stenosis or occlusion is high, which can be used as a routine screening and post-treatment review and help to judge the prognosis.