[Cerebral circulation and metabolism in elderly patients with dementia].
D000368:Aged; D000375:Aging / Q000378:metabolism; D000544:Alzheimer Disease / Q000378:metabolism; D001921:Brain / Q000000981:diagnostic imaging / Q000378:metabolism*; D002560:Cerebrovascular Circulation; D003704:Dementia / Q000378:metabolism / Q000503:physiopathology*; D004734:Energy Metabolism; D006801:Humans; D010101:Oxygen Consumption; D014055:Tomography, Emission-Computed