Cited by 19Advanced Neuroimaging Techniques and ApplicationsDementia and Cognitive Impairment ResearchCognitive Abilities and Testing

Atlas-Based Diffusion Tensor Imaging Correlates of Executive Function

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Nowrangi, Milap A., Okonkwo, Ozioma, Lyketsos, Constantine, Oishi, Kenichi, Mori, Susumu, Albert, Marilyn, Mielke, Michelle M.·2015·Journal of Alzheimer's Disease

Abstract

Impairment in executive function (EF) is commonly found in Alzheimer's disease (AD) and mild cognitive impairment (MCI). Atlas-based diffusion tensor imaging (DTI) methods may be useful in relating regional integrity to EF measures in MCI and AD. Sixty-six participants (25 normal controls, 22 MCI, and 19 AD) received DTI scans and clinical evaluation. DTI scans were applied to a pre-segmented atlas and fractional anisotropy (FA) and mean diffusivity (MD) were calculated. ANOVA was used to assess group differences in frontal, parietal, and cerebellar regions. For regions differing between groups (p < 0.01), linear regression examined the relationship between EF scores and regional FA and MD. Anisotropy and diffusivity in frontal and parietal lobe white matter structures were associated with EF scores in MCI and only frontal lobe structures in AD. EF was more strongly associated with FA than MD. The relationship between EF and anisotropy and diffusivity was strongest in MCI. These results suggest that regional white matter integrity is compromised in MCI and AD and that FA may be a better correlate of EF than MD.

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Crossref · 10.3233/jad-141937

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  • VBA has been widely used in structural MRI as an unbiased approach to assess morphological changes of tissue.

    “VBA has been widely used in structural MRI as an unbiased approach to assess morphological changes of tissue [43,50].”

    From Diffusion tensor imaging reveals whole-brain microstructural changes in the P301L mouse model of tauopathy. (2020) · cites this paper as [43]

    The Discussion (page unavailable) says voxel-based analysis is widely used for whole-brain analysis without an a priori hypothesis, supporting the claim’s ‘widely used’ and ‘unbiased’ characterization. But it discusses DTI-derived measures and white-matter abnormalities, not the use of VBA in structural MRI to assess tissue morphology. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Ex vivo DTI requires chemical fixation with formaldehyde to preserve tissue, and the procedure alters the macroscopic and microscopic properties of the tissue.

    “Nevertheless, ex vivo DTI requires chemical fixation with formaldehyde to preserve the tissue and the procedure alters the macroscopic and microscopic properties of the tissue.”

    From Diffusion tensor imaging reveals whole-brain microstructural changes in the P301L mouse model of tauopathy. (2020) · cites this paper as [43]

    The Methods section (1.2.2; page unavailable) describes DTI scans of participants, not ex vivo tissue preparation. Searches for formaldehyde fixation and ex vivo DTI found no passage addressing whether fixation is required or alters tissue properties. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 4

  1. [38]Oishi K Faria A Jiang H Li X Akhter K Zhang J Hsu JT Miller MI van Zijl PCM Albert M Lyketsos CG Woods R Toga AW Pike GB Rosa-Neto P Evans A Mazziotta J Mori S 2009 Atlas-based whole brain white matter analysis using large deformation diffeomorphic metric mapping: application to normal elderly and Alzheimer’s disease participants NeuroImage 46 486 499 19385016 PMC2885858
  2. [40]Lezak MD Lezak MD 2004c Verbal functions and language skills Neuropsychological Assessment Oxford University Press Oxford
  3. [45]Kavcic V Ni H Zhu T Zhong J Duffy C 2008 White matter integrity linked to functional impairments in aging and early Alzheimer's disease Alzheimer’s and Dementia 4 381 389 PMC2653423 19012862
  4. [54]Oishi K Faria A Jiang H Li X Akhter K Zhang J Hsu JT Miller MI van Zijl PC Albert M Lyketsos CG Woods R Toga AW Pike GB Rosa-Neto P Evans A Mazziotta J Mori S 2009 Atlas-based whole brain white matter analysis using large deformation diffeomorphic metric mapping: application to normal elderly and Alzheimer’s disease participantstlas Neuroimage 46 486 499 19385016 PMC2885858

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Authors
Nowrangi, M. A., Okonkwo, O., Lyketsos, C., Oishi, K., Mori, S., Albert, M., & Mielke, M. M.
Affiliations
  • Johns Hopkins University (US)
  • University of Wisconsin–Madison (US)
  • Mayo Clinic (US)
Venue
Journal of Alzheimer's Disease
Published
2015-01-22
Volume
44
Issue
2
Pages
585-598
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W1914127296
Cited by
19
References
54
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2021: 4 · 2020: 3 · 2019: 3 · 2018: 1 · 2017: 2 · 2016: 1 · 2015: 2
FWCI
1.62
Type
journal article
Language
en
Open access
Locations
  • Journal of Alzheimer s Disease (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (R01AG020012, R21AG033774, P50AG033514, P50AG005146)
  • National Institute of Biomedical Imaging and Bioengineering (P41EB015909, R01EB017638)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
Keywords
executive function, diffusion tensor imaging
MeSH terms
Aged, Alzheimer Disease, Atlases as Topic, Brain, Female, Humans, Male, Neuropsychological Tests, Anisotropy, Diffusion Tensor Imaging, Executive Function, Cognitive Dysfunction

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