Relating imaging indices of white matter integrity and volume in healthy older adults

Christina E. Hugenschmidt, Ann M. Peiffer, Robert A. Kraft, Ramon Casanova, Andrew R. Deibler, Jonathan H. Burdette, Joseph A. Maldjian, Paul J. Laurienti

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

Age-related alterations in white matter have the potential to profoundly affect cognitive functioning. In fact, magnetic resonance imaging (MRI) studies using fractional anisotropy (FA) to measure white matter integrity reveal a positive correlation between FA and behavioral performance in older adults. Confounding these results are imaging studies demonstrating age-related white matter atrophy in some areas displaying altered FA, suggesting changes in diffusion may be simply an epiphenomenon of tissue loss. In the current study, structural MRI techniques were used to identify the relationship between white matter integrity and decreased volume in healthy aging adults. The data demonstrated that white matter atrophy did in fact account for differences in some areas, but significant FA decreases remained across much of the white matter after adjusting for atrophy. Results suggest a complex relationship between changes in white matter integrity and volume. FA appears to be more sensitive than volume loss to changes in normal appearing tissue, and these FA changes may actually precede white matter atrophy in some brain areas. As such, the ability to detect early white matter alterations may facilitate development of targeted treatments that prevent or slow age-related white matter degradation and associated cognitive sequelae.

Original languageEnglish (US)
Pages (from-to)433-442
Number of pages10
JournalCerebral Cortex
Volume18
Issue number2
DOIs
StatePublished - Feb 1 2008

Fingerprint

Anisotropy
Atrophy
Magnetic Resonance Imaging
White Matter
Brain

Keywords

  • Aging
  • Diffusion tensor imaging (DTI)
  • Fractional anisotropy (FA)
  • Voxel-based morphometry (VBM)

ASJC Scopus subject areas

  • Cognitive Neuroscience
  • Cellular and Molecular Neuroscience

Cite this

Hugenschmidt, C. E., Peiffer, A. M., Kraft, R. A., Casanova, R., Deibler, A. R., Burdette, J. H., ... Laurienti, P. J. (2008). Relating imaging indices of white matter integrity and volume in healthy older adults. Cerebral Cortex, 18(2), 433-442. https://doi.org/10.1093/cercor/bhm080

Relating imaging indices of white matter integrity and volume in healthy older adults. / Hugenschmidt, Christina E.; Peiffer, Ann M.; Kraft, Robert A.; Casanova, Ramon; Deibler, Andrew R.; Burdette, Jonathan H.; Maldjian, Joseph A.; Laurienti, Paul J.

In: Cerebral Cortex, Vol. 18, No. 2, 01.02.2008, p. 433-442.

Research output: Contribution to journalArticle

Hugenschmidt, CE, Peiffer, AM, Kraft, RA, Casanova, R, Deibler, AR, Burdette, JH, Maldjian, JA & Laurienti, PJ 2008, 'Relating imaging indices of white matter integrity and volume in healthy older adults', Cerebral Cortex, vol. 18, no. 2, pp. 433-442. https://doi.org/10.1093/cercor/bhm080
Hugenschmidt CE, Peiffer AM, Kraft RA, Casanova R, Deibler AR, Burdette JH et al. Relating imaging indices of white matter integrity and volume in healthy older adults. Cerebral Cortex. 2008 Feb 1;18(2):433-442. https://doi.org/10.1093/cercor/bhm080
Hugenschmidt, Christina E. ; Peiffer, Ann M. ; Kraft, Robert A. ; Casanova, Ramon ; Deibler, Andrew R. ; Burdette, Jonathan H. ; Maldjian, Joseph A. ; Laurienti, Paul J. / Relating imaging indices of white matter integrity and volume in healthy older adults. In: Cerebral Cortex. 2008 ; Vol. 18, No. 2. pp. 433-442.
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