1Aaslid R,Markwalder TM,Nornes H.Noninvasive transcranial Doppler ultrasound recording of flow velocity in basal cerebral arteries[J].J Neurosurg,1982,57:769-774.
2Sliwka U,Klotzsch C,Popescu O,et al.Do chronic middle cerebral artery stenosis represent an embolic focus? A multirange transcranial Doppler study[J].Stroke,1997,28(7):1324-1327.
3Wong KS,Li H,Lam W,et al.Progression of middle cerebral artery occlusive disease and its relationship with further vascular events after stroke[J]. Stroke,2002,33:532-536.
4Arenillas JF,Molina CA,Montaner J,et al.Progression and clinical recurrence of symptomatic middle cerebral artery stenosis:a long-term follow-up transcranial Doppler ultrasound study[J].Stroke,2001,32:2898-2904.