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- W1994424740 abstract "We assessed cerebral hemodynamic status longitudinally with serial positron emission tomography (PET) studies in patients with carotid occlusion and no interval stroke. Regional measurements of cerebral blood flow (CBF), cerebral blood volume (CBV), cerebral rate of oxygen metabolism (CMRO2), oxygen extraction fraction (OEF), and mean transit time (MTT) were obtained using PET in 21 patients with unilateral carotid artery occlusion and were repeated 12 to 59 months later Hemodynamic stage was assigned based on left to right hemispheric ratios of mean quantitative values as: Stage 0, normal hemodynamics; Stage 1, increased MTT (autoregulatory vasodilatation); and Stage 2, increased OEF. Eight patients (9 paired studies) were initially categorized as Stage 0. Repeat mean hemispheric ratios remained within the range of normal value (95% confidence limits). Three patients (4 paired studies) were categorized as Stage 1. Repeat MTT ratios remained elevated while other ratios remained normal. Ten patients (11 pa..." @default.
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- W1994424740 date "1998-11-01" @default.
- W1994424740 modified "2023-09-24" @default.
- W1994424740 title "Temporal Stability of Hemodynamic Stage in Patients with Carotid Artery Occlusion" @default.
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- W1994424740 doi "https://doi.org/10.1177/19714009980110s259" @default.
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