经颅多普勒超声与颅脑磁共振血管造影对颅内大动脉异常检出率的对比研究

目的探讨经颅多普勒超声(TCD)对缺血性脑血管病患者颅内大动脉异常的检出率。方法两组缺血性脑血管病患者，一组38例，以单侧肢体无力为主症；另一组35例，以头晕为主症。比较两组患者TCD与颅脑MRA对颅内大动脉异常的检出率。结果对以单侧肢体无力为主症的患者，TCD与颅脑MRA对颅内大动脉异常的检出率相同，以头晕为主症的患者则检出率不同。结论对以单侧肢体无力为主症的缺血性脑血管病患者中，TCD可作为初筛检查，而以头晕为主症的患者则不适宜。

Detection of Abnormal Intracranial Large Arteries Using Transcranial Doppler or Magnetic Resonance Angiography

ObjectiveTo investigate the clinical application of transcranial Doppler (TCD) in patients with ischemic cerebrovascular diseases (ICVD). MethodsPatients complaining hemiplegia (n=38) or dizziness (n=35) after ICVD were detected with TCD and magnetic resonance angiography (MRA). ResultsThe incidence of abnormal intracranial large arteries detection was similar in patients complaining hemiplegia (χ²=1.03,P>0.05) between TCD and MRA, but different in patients complaining dizziness(χ²=10.76,P<0.05). ConclusionIn the patients with ICVD, TCD can be used in those complaining hemiplegia as a screening test before vascular interventional therapy, but be worthless in those complaining dizziness.