Cited by 579Dementia and Cognitive Impairment ResearchCognitive Abilities and TestingFunctional Brain Connectivity Studies

Normative estimates of cross-sectional and longitudinal brain volume decline in aging and AD

Fotenos, A. F., Snyder, A. Z., Girton, L. E., Morris, J. C., Buckner, R. L.·2005·Neurology

Abstract

OBJECTIVE: To test the hypotheses 1) that whole-brain volume decline begins in early adulthood, 2) that cross-sectional and longitudinal atrophy estimates agree in older, nondemented individuals, and 3) that longitudinal atrophy accelerates in the earliest stages of Alzheimer disease (AD). METHODS: High-resolution, high-contrast structural MRIs were obtained from 370 adults (age 18 to 97). Participants over 65 (n = 192) were characterized using the Clinical Dementia Rating (CDR) as either nondemented (CDR 0, n = 94) or with very mild to mild dementia of the Alzheimer type (DAT, CDR 0.5 and 1, n = 98). Of these older participants, 79 belonged to a longitudinal cohort and were imaged again a mean 1.8 years after baseline. Estimates of gray matter (nGM), white matter (nWM), and whole-brain volume (nWBV) normalized for head sizes were generated based on atlas registration and image segmentation. RESULTS: Hierarchical regression of nWBV estimates from nondemented individuals across the adult lifespan revealed a strong linear, moderate quadratic pattern of decline beginning in early adulthood, with later onset of nWM than nGM loss. Whole-brain volume differences were detected by age 30. The cross-sectional atrophy model overlapped with the rates measured longitudinally in older, nondemented individuals (mean decline of -0.45% per year). In those individuals with very mild DAT, atrophy rate more than doubled (-0.98% per year). CONCLUSIONS: Nondemented individuals exhibit a slow rate of whole-brain atrophy from early in adulthood with white-matter loss beginning in middle age; in older adults, the onset of dementia of the Alzheimer type is associated with a markedly accelerated atrophy rate.

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Crossref · 10.1212/01.wnl.0000154530.72969.11

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Authors
Fotenos, A. F., Snyder, A. Z., Girton, L. E., Morris, J. C., & Buckner, R. L.
Affiliations
Howard Hughes Medical Institute (US)
Venue
Neurology
Published
2005-03-22
Volume
64
Issue
6
Pages
1032-1039
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W2084177652
Cited by
579
References
54
Citations by year
2026: 17 · 2025: 26 · 2024: 26 · 2023: 28 · 2022: 37 · 2021: 31 · 2020: 43 · 2019: 39 · 2018: 18 · 2017: 26 · 2016: 26 · 2015: 28 · 2014: 30 · 2013: 20 · 2012: 25
FWCI
10.23
Type
journal article
Language
en
Open access
closed
Locations
  • Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (P 50 AG05681, P50AG005681, P01 AG0 3991, P01AG003991)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
brain atrophy, Alzheimer's disease, aging, white matter loss, gray matter loss, total brain volume, mild cognitive impairment, dementia onset
MeSH terms
Adolescent, Adult, Age Factors, Aged, Aged, 80 and over, Aging, Alzheimer Disease, Atrophy, Brain, Brain Mapping, Female, Humans, Longitudinal Studies, Magnetic Resonance Imaging, Male, Middle Aged, Reference Values, Regression Analysis, Disease Progression

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