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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Related Experiment Video

Updated: Mar 27, 2026

Magnetic Resonance Imaging of Multiple Sclerosis at 7.0 Tesla
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Multi-scale MRI spectrum detects differences in myelin integrity between MS lesion types.

Yunyan Zhang1, Laura Jonkman2, Antoine Klauser2

  • 1Department of Radiology, University of Calgary, Calgary, AB, Canada/ Department of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada/ Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada yunyzhan@ucalgary.ca.

Multiple Sclerosis (Houndmills, Basingstoke, England)
|January 13, 2016
PubMed
Summary

Magnetic resonance imaging (MRI) texture analysis can detect myelin differences in multiple sclerosis (MS) lesions. This multi-scale spectral approach may help monitor disease activity and assess remyelination therapies.

Keywords:
Myelin integrityclinical MRIlesion typemulti-scale spectrummultiple sclerosis

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Area of Science:

  • Neuroimaging
  • Neuropathology
  • Biophysics

Background:

  • Multiple sclerosis (MS) lesions exhibit varying myelin pathology at autopsy.
  • Standard magnetic resonance imaging (MRI) cannot differentiate these myelin differences.

Purpose of the Study:

  • To assess if local MRI spectrum analysis can detect variations in myelin integrity within MS lesions.

Main Methods:

  • Fresh brain slices from 21 MS patients were imaged using 1.5T MRI.
  • White matter lesions were histologically classified (pre-active, active, chronic active, chronic inactive, remyelinated).
  • Voxel-based frequency spectrum analysis of T2-weighted MRI characterized lesion texture.

Main Results:

  • MRI texture heterogeneity was significantly greater in completely demyelinated lesions compared to myelin-preserved lesions and normal-appearing white matter.
  • Low-frequency spectral patterns distinguished demyelinated lesions from pre-active and remyelinated lesions.
  • Distinct texture scales were observed for different MS lesion types.

Conclusions:

  • Multi-scale spectral analysis of standard MRI may enable evaluation of myelin integrity in MS lesions.
  • This technique could be crucial for monitoring MS disease activity.
  • It may also aid in assessing the efficacy of remyelination therapies for MS patients.