BACKGROUND AND PURPOSE: Chronic middle cerebral artery (MCA) occlusion is more
common than generally thought. It is important to assess the cerebral hemodynamic status in …

BACKGROUND AND PURPOSE Middle cerebral artery (MCA) stenosis and occlusion may
cause ischemic symptoms through both hemodynamic and embolic mechanisms. The …

BACKGROUND AND PURPOSE: The natural history of asymptomatic major cerebral artery
occlusive disease is unclear. Rate of symptomatic change, appearance of new lesions on …

Background and Purpose—Misery perfusion, identified by increased oxygen extraction
fraction (OEF), predicts subsequent stroke in patients with carotid occlusion. The purpose of …

Studies in humans suggest that regions that show maximal increases in brain oxygen
extraction fraction (OEF) in the hours following an ischemic episode are those most …

Specific hemodynamic changes in acute ischemia were investigated using a middle
cerebral artery occlu sion primate model and positron emission tomography. The cerebral …

Purpose In internal carotid artery occlusion, patients with inadequate blood supply relative to
metabolic demand (misery perfusion) may be at increased risk for cerebral ischemia. This …

PURPOSE: To investigate the relationship between the patterns of cerebral infarction that
have been associated with hemodynamic impairment and the presence of severe chronic …

Background: In internal carotid artery (ICA) occlusion, increased oxygen extraction fraction
(OEF) indicates inadequate collateral blood flow distal to the occlusion, which may be …

Background and Purpose—The purpose of this experiment was to assess long-term
cerebral hemodynamic and metabolic changes in patients with increased oxygen extraction …