14例颈内动脉狭窄或闭塞的TCD诊断,MRA和DSA对照及治疗后 …

目的：观察经颅多普勒（ＴＣＤ）诊断为颈内动脉（ＩＣＡ０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：１４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〈１５ｃｍ／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。ＴＤＣ与ＤＳＡ全部符合，与ＭＲＡ符合率为８７．５％（

INTERNAL CAROTID ARTERY STENOSIS/OCCLUSION: COMPARISON OF TRANSCRANIAL DOPPLER WITH MRA WITH DSA AND ITS POSTTREATMENT EVALUATION IN 14 PATIENTS

Objective:To observe the Doppler spectrum and clinical characteristics in 14 patients with internal caroted artery(ICA) stenosis or occlusion with comparison with MRA and DSA findings and the changes after treatment.Methods:Fourteen patients with stenosis or occlusion of ICA were diagnosed by using TCD from April,1997 to April,1999 and were confirmed by using digital subtraction angiography(DSA) and magnetic resonance angiography(MRA).Of them,nine patients were reexamined after treatment.Results:The mean flow velocity of the middle cerebral artery(MCA)<15 cm/s of four patients got severe symptoms and large infarctions.The reduction of pulsatility index and pulsatility transmission index are more sensitive than blood flow velocity.Conclusion:TCD provides a reliable and noninvasive diagnosis for ICA stenosis or occclusion,which may be used for a screening examination and regular reexamination after treatment.Proper selection of TCD and other imaging examinations will benefit the patients.