Blood Flow Distribution in Cerebral Arteries
| Autor: | Khalid Ambarki, Jan Malm, Anders Wahlin, Anders Eklund, Richard Birgander, Laleh Zarrinkoob |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Adult
Male Aging medicine.medical_specialty Cerebral arteries Hemodynamics Young Adult Cerebral circulation medicine.artery medicine Humans Stroke Aged medicine.diagnostic_test business.industry Brain Magnetic resonance imaging Anatomy Blood flow Cerebral Arteries medicine.disease Magnetic Resonance Imaging Neurology Cerebral blood flow Cerebrovascular Circulation Circle of Willis Female Original Article Neurology (clinical) Radiology Cardiology and Cardiovascular Medicine business Blood Flow Velocity |
| Zdroj: | Journal of Cerebral Blood Flow & Metabolism. 35:648-654 |
| ISSN: | 1559-7016 0271-678X |
| Popis: | High-resolution phase—contrast magnetic resonance imaging can now assess flow in proximal and distal cerebral arteries. The aim of this study was to describe how total cerebral blood flow (tCBF) is distributed into the vascular tree with regard to age, sex and anatomic variations. Forty-nine healthy young (mean 25 years) and 45 elderly (mean 71 years) individuals were included. Blood flow rate (BFR) in 21 intra- and extracerebral arteries was measured. Total cerebral blood flow was defined as BFR in the internal carotid plus vertebral arteries and mean cerebral perfusion as tCBF/brain volume. Carotid/vertebral distribution was 72%/28% and was not related to age, sex, or brain volume. Total cerebral blood flow (717±123 mL/min) was distributed to each side as follows: middle cerebral artery (MCA), 21%; distal MCA, 6%; anterior cerebral artery (ACA), 12%, distal ACA, 4%; ophthalmic artery, 2%; posterior cerebral artery (PCA), 8%; and 20% to basilar artery. Deviating distributions were observed in subjects with ‘fetal’ PCA. Blood flow rate in cerebral arteries decreased with increasing age ( P |
| Databáze: | OpenAIRE |
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