Decreases in Regional Cerebral Blood Flow with Normal Aging
نویسندگان
چکیده
منابع مشابه
comparison of blood flow velocity changes in posterior cerebral artery measured with transcranial doppler sonography in migraineurs with visual aura and normal persons after photostimulation
چکیده ندارد.
15 صفحه اولRegional cerebral blood flow decreases during chronic and acute hyperglycemia.
The presence of hyperglycemia prior to stroke or cardiac arrest can increase neuronal damage caused by brain ischemia. Acute hyperglycemia shows this effect in animal models of stroke. However, chronic hyperglycemia and chronic hyperglycemia with additional acute elevation of blood glucose are more common premorbid states for stroke patients. The effect of chronic hyperglycemia on regional cere...
متن کاملRegional cerebral blood flow and oxygen consumption in human aging.
The oxygen-15 continuous inhalation technique and PET were used to study the age-related changes in regional CBF and CMRO2. Twenty-seven patients, aged 19 to 76 years, free of any history of cerebral disease and vascular risk factors were examined in "resting state." CBF, CMRO2 and oxygen extraction fraction (OEF) values were calculated in seven different brain structures as well as in mean gra...
متن کاملReduction in regional cerebral blood flow during normal aging in man.
Regional cerebral blood flow (rCBF) was measured by the 133Xenon inhalation method in a selected group of 44 normal non-hospitalized, normotensive subjects aged 19 to 79 years. rCBF was computed as the initial slope index value (ISI). Advancing age was associated with significant reductions in the mean brain and mean hemispheric ISI as well as in individual ISI levels measured from all areas in...
متن کاملRegional blood flow in the normal cerebral hemisphere.
Measurement of the rate of clearance of 133Xenon from the brain after injection of this radioisotope into the internal carotid artery has become an accepted method for estimating cerebral blood flow (H0edt-Rasmussen, 1965, 1967; Ingvar, Cronqvist, Ekberg, Risberg, and H0edt-Rasmussen, 1965). Resolution of the clearance curves into two components, fast and slow, may be carried out (H0edtRasmusse...
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ژورنال
عنوان ژورنال: Journal of Cerebral Blood Flow & Metabolism
سال: 1991
ISSN: 0271-678X,1559-7016
DOI: 10.1038/jcbfm.1991.121