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MR Color Mapping of Myelin Fiber Orientation
Abstract
Diffusion of water in brain white matter has been shown to be anisotropic: Water mobility is lower when measured perpendicular to the fiber direction rather than parallel to it. This feature was used to produce images of the myelin fiber orientation. Coronal and sagittal MR diffusion images were obtained in volunteers using an echo-planar imaging sequence sensitized to molecular diffusion in perpendicular directions. Color-coded images of myelin orientation were then generated by combining these images together. The orientation of the white matter tracts was found to be in excellent agreement with known anatomy. Myelin fiber orientation mapping may offer a new perspective to evaluate white matter disorders.
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Color-coded orientation maps of white-matter tracts were produced from diffusion images acquired along different directions, assuming that fibers align with the direction of greatest diffusion.
“Soon after anisotropy was recognized, color-coded orientation maps of white-matter tracts were produced from diffusion images acquired along different directions, assuming that fibers align with the direction of greatest diffusion (Douek et al., 1991).”
From 40 Years of diffusion MRI in the brain: From history to emerging frontiers (2026) · cites this paper as Douek et al., 1991
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Cited by 274
Metadata
- Authors
- Douek, P., Turner, R., Pekar, J., Patronas, N., & Bihan, D. L.
- Affiliations
- National Institutes of Health (US)
- Venue
- Journal of Computer Assisted Tomography
- Published
- 1991-11
- Volume
- 15
- Issue
- 6
- Pages
- 923-929
- ISSN
- 0363-8715 (ISSN-L)
- OpenAlex
- W2014509822
- Cited by
- 274
- References
- 0
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 3 · 2023: 2 · 2022: 4 · 2021: 5 · 2020: 4 · 2019: 6 · 2018: 7 · 2017: 6 · 2016: 8 · 2015: 11 · 2014: 16 · 2013: 13 · 2012: 8
- FWCI
- 3.54
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Computer Assisted Tomography (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion)
- Max Planck Digital Library (submittedVersion)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- 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
- Physical Sciences › Chemistry › Spectroscopy › NMR spectroscopy and applications
- Keywords
- diffusion-weighted imaging, white matter tracts, echo planar imaging, white matter disease, white matter
- MeSH terms
- Algorithms, Color, Humans, Magnetic Resonance Imaging, Myelin Sheath, Reference Values, Anisotropy
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