[Transcranial doppler potentialities in asymptomatic "carotid disease"].

To elicit Transcranial doppler (TCD) potentialities in asymptomatic hemodynamically significant occlusive carotid diseases, twenty one patients with subclinical severe stenosis (more than 50%) of internal carotid artery (ICA) have been studied. After routine TCD, bilateral embolic monitoring of middle cerebral arteries (MCA) has been carried out. Besides, the functional test with breath-holding for cerebrovascular reserve (CVR) was made in all the patients.

[Transcranial dopplerography in chronic disorders of cerebral circulation].

Forty one 41-82 year-old patients with chronic cerebrovascular diseases were examined neurologically, using ultrasonic dopplerography (USD) of extracranial cerebral vessels and transcranial dopplerography (TCD) of intracranial cerebral vessels. Changes of the blood flow through major cerebral arteries as well as peculiarities of the venous circulation were evaluated. A significant decrease of the cerebral blood flow velocity (BFV) was found by TCD on early stages of cerebrovascular diseases, while USD revealed it on the III stage of dyscirculatory encephalopathy.