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Related Experiment Video

Updated: Jan 20, 2026

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Diffusion MRI in the brain - Theory and concepts.

J-Donald Tournier1

  • 1Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK; Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, King's Health Partners, St. Thomas' Hospital, London SE1 7EH, UK.

Progress in Nuclear Magnetic Resonance Spectroscopy
|September 5, 2019
PubMed
Summary

Diffusion MRI uses water molecule movement to probe brain tissue microstructure. This technique enables non-invasive in vivo tractography for mapping white matter tracts and applications like surgical planning.

Keywords:
Diffusion MRIFibre-trackingMicrostructure imagingTractography

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Area of Science:

  • Neuroimaging
  • Biophysics

Background:

  • Diffusion MRI is a key neuroimaging tool, sensitive to water diffusion in tissue microstructure.
  • Its direction-dependent sensitivity in white matter arises from aligned structures like axonal membranes.

Purpose of the Study:

  • To review the theory and concepts of diffusion MRI.
  • To highlight key applications of diffusion MRI in the brain, focusing on tractography.

Main Methods:

  • Review of diffusion MRI principles.
  • Discussion of tractography algorithms and applications.

Main Results:

  • Diffusion MRI provides insights into tissue microstructure.
  • Enables in vivo, non-invasive mapping of white matter tracts via tractography.

Conclusions:

  • Diffusion MRI is crucial for understanding brain microstructure and connectivity.
  • Tractography is a unique and valuable application of diffusion MRI in neuroscience and clinical practice.