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Age-related changes in regional cerebral blood flow and brain volume in healthy subjects

Journal Article · · J. Am. Geriatr. Soc.; (United States)
Using the xenon-133 inhalation method, we studied the age-related decline in regional cerebral blood flow, calculated as the initial slope index (ISI), in neurologically normal subjects without any risk factors for cerebral arteriosclerosis (154 men and 123 women), ranging in age from 19 to 88 years. The decline in the ISI was rapid in younger age groups and gradual in older age groups. The ISI was higher in women than in men older than 40 years. Using computed tomography, we studied the age-related decline in brain volume index (BVI; 100% X brain volume/cranial cavity volume) in neurologically normal subjects without any risk factors for cerebral arteriosclerosis (92 men and 49 women), ranging in age from 37 to 86 years. The decline in the BVI was gradual in younger age groups and rapid in older age groups. The BVI was higher in women than in men older than 60 years.
Research Organization:
Tohoku Univ., Sendai (Japan)
OSTI ID:
7142797
Journal Information:
J. Am. Geriatr. Soc.; (United States), Journal Name: J. Am. Geriatr. Soc.; (United States) Vol. 36:4; ISSN JAGSA
Country of Publication:
United States
Language:
English