Unlike other imaging modalities, cerebrovascular ultrasound provides real-time information about the blood flow in addition to the hemodynamic changes as a result of various physiological as well as pathological states.
Intracranial atherosclerotic disease is associated with a high risk of stroke. High flow velocities (FV) in TCD can predict stroke. It is an urgent subject of research to find cut-off points that provide high sensitivity and specifity.
Evaluation of posterior circulation with single-gate transcranial Doppler (TCD) is technically challenging and yields lower accuracy parameters in comparison to anterior circulation vessels.
Literature: Emboli stroke risk
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