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Diffusion tensor imaging of white matter tract evolution over the lifespan

Lebel, C., Gee, M., Camicioli, R., Wieler, M., Martin, W., Beaulieu, C.·2012·NeuroImage

Abstract

Diffusion tensor imaging (DTI) has been used widely to show structural brain changes during both development and aging. Lifespan studies are valuable because they connect these two processes, yet few DTI studies have been conducted that include both children and elderly subjects. This study used DTI tractography to investigate 12 major white matter connections in 403 healthy subjects aged 5-83 years. Poisson fits were used to model changes of fractional anisotropy (FA) and mean diffusivity (MD) across the age span, and were highly significant for all tracts. FA increased during childhood and adolescence, reached a peak between 20 and 42 years of age, and then decreased. MD showed an opposite trend, decreasing first, reaching a minimum at 18-41 years, and then increasing later in life. These trajectories demonstrate rates and timing of development and degradation that vary regionally in the brain. The corpus callosum and fornix showed early reversals of development trends, while frontal-temporal connections (cingulum, uncinate, superior longitudinal) showed more prolonged maturation and delayed declines. FA changes were driven by perpendicular diffusivity, suggesting changes of myelination and/or axonal density. Tract volume changed significantly with age for most tracts, but did not greatly influence the FA and MD trajectories. This study demonstrates clear age-related microstructural changes throughout the brain white matter, and provides normative data that will be useful f…

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Crossref · 10.1016/j.neuroimage.2011.11.094

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  • The mean age to reach peak fractional anisotropy in the cingulum is 42 years.

    “Remarkably, the mean age to reach peak fractional anisotropy was found to be 42 years (Lebel et al., 2012), making the cingulum one of the last major tracts to mature by this measure.”

    From The cingulum bundle: Anatomy, function, and dysfunction (2018) · cites this paper as Lebel et al., 2012

  • Diffusion imaging studies show an extended period of cingulum maturation through adolescence and beyond, often not reaching adult characteristics until the mid twenties or later.

    “Diffusion imaging studies have revealed an extended period of cingulum maturation through adolescence and beyond, often not reaching its adult characteristics until the mid twenties or later (Lebel and Beaulieu, 2011; Lebel et al., 2012).”

    From The cingulum bundle: Anatomy, function, and dysfunction (2018) · cites this paper as Lebel et al., 2012

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Authors
Lebel, C., Gee, M., Camicioli, R., Wieler, M., Martin, W., & Beaulieu, C.
Affiliations
University of Alberta (CA)
Corresponding author
Beaulieu, C.
Venue
NeuroImage
Publisher
Elsevier BV
Published
2012-03
Volume
60
Issue
1
Pages
340-352
ISSN
1053-8119 (ISSN-L)
OpenAlex
W1983906797
Cited by
1,100
References
11
Citations by year
2026: 46 · 2025: 73 · 2024: 62 · 2023: 81 · 2022: 91 · 2021: 94 · 2020: 95 · 2019: 79 · 2018: 89 · 2017: 87 · 2016: 87 · 2015: 73 · 2014: 65 · 2013: 62 · 2012: 14
FWCI
34.66
Type
journal article
Language
en
Open access
closed
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Canada Foundation for Innovation
  • Canadian Language and Literacy Research Network
  • Alberta Innovates
  • Alberta Heritage Foundation for Medical Research
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
Keywords
white matter development, white matter aging, fractional anisotropy, mean diffusivity, white matter microstructure, corpus callosum, fornix, cingulum, uncinate fasciculus, superior longitudinal fasciculus, myelination, axon density, tract volume, reference values
MeSH terms
Adolescent, Adult, Age Factors, Aged, Aged, 80 and over, Aging, Brain, Child, Child, Preschool, Female, Humans, Male, Middle Aged, Organ Size, Young Adult, Diffusion Tensor Imaging

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