Cerebral microembolism in symptomatic and asymptomatic high‐grade internal carotid artery stenosis

Using transcranial Doppler (TCD) ultrasonography in patients with high-grade (>=70%) internal carotid artery (ICA) stenosis, we examined the relation between the rate of TCD-detected silent microembolism of the ipsilateral middle cerebral artery and a history of recent (