Longitudinal magnetic resonance imaging studies of older adults: A shrinking brain

Susan M. Resnick, Dzung L. Pham, Michael A Kraut, Alan B. Zonderman, Christos Davatzikos

Research output: Contribution to journalArticle

Abstract

Age-related loss of brain tissue has been inferred from cross-sectional neuroimaging studies, but direct measurements of gray and white matter changes from longitudinal studies are lacking. We quantified longitudinal magnetic resonance imaging (MRI) scans of 92 nondemented older adults (age 59-85 years at baseline) in the Baltimore Longitudinal Study of Aging to determine the rates and regional distribution of gray and white matter tissue loss in older adults. Using images from baseline, 2 year, and 4 year follow-up, we found significant age changes in gray (p <0.001) and white (p <0.001) volumes even in a subgroup of 24 very healthy elderly. Annual rates of tissue loss were 5.4 ± 0.3, 2.4 ± 0.4, and 3.1 ± 0.4 cm3 per year for total brain, gray, and white volumes, respectively, and ventricles increased by 1.4 ± 0.1 cm3 per year (3.7, 1.3, 2.4, and 1.2 cm3, respectively, in very healthy). Frontal and parietal, compared with temporal and occipital, lobar regions showed greater decline. Gray matter loss was most pronounced for orbital and inferior frontal, cingulate, insular, inferior parietal, and to alesser extent mesial temporal regions, whereas white matter changes were widespread. In this first study of gray and white matter volume changes, we demonstrate significant longitudinal tissue loss for both gray and white matter even in very healthy older adults. These data provide essential information on the rate and regional pattern of age-associated changes against which pathology can be evaluated and suggest slower rates of brain atrophy in individuals who remain medically and cognitively healthy.

Original languageEnglish (US)
Pages (from-to)3295-3301
Number of pages7
JournalJournal of Neuroscience
Volume23
Issue number8
StatePublished - Apr 15 2003

Fingerprint

Magnetic Resonance Imaging
Brain
Longitudinal Studies
Occipital Lobe
Baltimore
Temporal Lobe
Neuroimaging
Atrophy
Cross-Sectional Studies
White Matter
Gray Matter
Pathology

Keywords

  • Aging
  • Brain volumes
  • Gray matter loss
  • Longitudinal studies
  • Magnetic resonance imaging
  • White matter loss

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Resnick, S. M., Pham, D. L., Kraut, M. A., Zonderman, A. B., & Davatzikos, C. (2003). Longitudinal magnetic resonance imaging studies of older adults: A shrinking brain. Journal of Neuroscience, 23(8), 3295-3301.

Longitudinal magnetic resonance imaging studies of older adults : A shrinking brain. / Resnick, Susan M.; Pham, Dzung L.; Kraut, Michael A; Zonderman, Alan B.; Davatzikos, Christos.

In: Journal of Neuroscience, Vol. 23, No. 8, 15.04.2003, p. 3295-3301.

Research output: Contribution to journalArticle

Resnick, SM, Pham, DL, Kraut, MA, Zonderman, AB & Davatzikos, C 2003, 'Longitudinal magnetic resonance imaging studies of older adults: A shrinking brain', Journal of Neuroscience, vol. 23, no. 8, pp. 3295-3301.
Resnick SM, Pham DL, Kraut MA, Zonderman AB, Davatzikos C. Longitudinal magnetic resonance imaging studies of older adults: A shrinking brain. Journal of Neuroscience. 2003 Apr 15;23(8):3295-3301.
Resnick, Susan M. ; Pham, Dzung L. ; Kraut, Michael A ; Zonderman, Alan B. ; Davatzikos, Christos. / Longitudinal magnetic resonance imaging studies of older adults : A shrinking brain. In: Journal of Neuroscience. 2003 ; Vol. 23, No. 8. pp. 3295-3301.
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