Cited by 1,548Advanced Neuroimaging Techniques and ApplicationsAdvanced MRI Techniques and ApplicationsFunctional Brain Connectivity Studies

High angular resolution diffusion imaging reveals intravoxel white matter fiber heterogeneity

Tuch, David S., Reese, Timothy G., Wiegell, Mette R., Makris, Nikos, Belliveau, John W., Wedeen, Van J.·2002·Magnetic Resonance in Medicine

Abstract

Magnetic resonance (MR) diffusion tensor imaging (DTI) can resolve the white matter fiber orientation within a voxel provided that the fibers are strongly aligned. However, a given voxel may contain a distribution of fiber orientations due to, for example, intravoxel fiber crossing. The present study sought to test whether a geodesic, high b-value diffusion gradient sampling scheme could resolve multiple fiber orientations within a single voxel. In regions of fiber crossing the diffusion signal exhibited multiple local maxima/minima as a function of diffusion gradient orientation, indicating the presence of multiple intravoxel fiber orientations. The multimodality of the observed diffusion signal precluded the standard tensor reconstruction, so instead the diffusion signal was modeled as arising from a discrete mixture of Gaussian diffusion processes in slow exchange, and the underlying mixture of tensors was solved for using a gradient descent scheme. The multitensor reconstruction resolved multiple intravoxel fiber populations corresponding to known fiber anatomy. Ma

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Crossref · 10.1002/mrm.10268

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  • The DTI model cannot differentiate tissue compartments or crossing fibers, which are estimated to occur in up to 90% of white matter voxels at typical dMRI resolution.

    “The DTI model cannot differentiate these components or even crossing fibers (Tuch et al., 2002; Jbabdi et al., 2010), which are estimated to occur in up to 90% of WM voxels at the typical dMRI resolution (Descoteaux et al., 2009; Jeurissen et al., 2013).”

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Authors
Tuch, D. S., Reese, T. G., Wiegell, M. R., Makris, N., Belliveau, J. W., & Wedeen, V. J.
Affiliations
Massachusetts General Hospital (US)
Corresponding author
Wedeen, Van J.
Venue
Magnetic Resonance in Medicine
Publisher
Wiley
Published
2002-09-26
Volume
48
Issue
4
Pages
577-582
ISSN
  • 0740-3194 (ISSN-L)
  • 1522-2594
OpenAlex
W2080198834
Cited by
1,548
References
27
Citations by year
2026: 20 · 2025: 43 · 2024: 39 · 2023: 52 · 2022: 59 · 2021: 65 · 2020: 65 · 2019: 82 · 2018: 76 · 2017: 84 · 2016: 84 · 2015: 115 · 2014: 93 · 2013: 95 · 2012: 79
FWCI
23.23
Type
journal article
Language
en
Open access
closed
Locations
  • Magnetic Resonance in Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
Sol Goldman Charitable Trust
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
high angular resolution diffusion imaging
MeSH terms
Brain, Computer Simulation, Humans, Image Processing, Computer-Assisted, Male, Nerve Fibers, Anisotropy, Diffusion Magnetic Resonance Imaging

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