BACKGROUND AND PURPOSE: In severe carotid stenosis, blood supply via the
poststenotic internal carotid artery (ICA) and collateral pathways determine cerebral …

BACKGROUND AND PURPOSE: Various Doppler criteria have been used to predict
hemodynamically significant carotid stenosis. This study was performed to elucidate whether …

PURPOSE: We investigated whether measurement of blood flow in the extracranial distal
internal carotid artery (ICA) by transoral carotid ultrasonography (TOCU) can predict the …

Background and Purpose—The hemodynamic effects of extracranial carotid stenosis on
intracranial blood flow are not well characterized. We sought to determine the impact of …

BACKGROUND: The objective of this study is to examine the utility of acetazolamide TCD
ultrasound in the evaluation of MCA collateral blood flow reserve in patients with carotid …

Background: Duplex ultrasound (DUS) has shown a> 90% accuracy compared to
angiography, concerning the degree of internal carotid artery (ICA) stenosis. However …

Background: Cerebral blood flow (CBF) can be related to the risk of occurrence of
neurological symptoms. Well-developed collateral circulation is a good prognostic factor in …

The intracranial effects of acetazolamide on flow velocities can be monitored noninvasively
by transcranial Doppler (TCD) sonography. Extracranial volume flow changes can now …

Purpose: To prospectively evaluate changes in brain perfusion computed tomographic (CT)
parameters after revascularization of unilateral symptomatic carotid artery stenosis and to …

BACKGROUND AND PURPOSE: The cerebral hemodynamic sequelae of interventions in
patients with severe internal carotid artery (ICA) stenoses are not fully understood. In this …