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Related Experiment Videos

Amyotrophic lateral sclerosis: diffusion tensor tractography and voxel-based analysis.

Osamu Abe1, Haruyasu Yamada, Yoshitaka Masutani

  • 1Department of Radiology, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, 113-8655, Japan. abediag-tky@umin.ac.jp

NMR in Biomedicine
|September 24, 2004
PubMed
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This study found reduced water molecule diffusion anisotropy in the frontal white matter of amyotrophic lateral sclerosis (ALS) patients. Diffusion tensor imaging may help non-invasively locate affected brain tissues in ALS.

Area of Science:

  • Neuroscience
  • Medical Imaging
  • Neurology

Background:

  • Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease affecting motor neurons.
  • Understanding white matter changes in ALS is crucial for diagnosis and monitoring.
  • Diffusion tensor imaging (DTI) offers insights into white matter integrity.

Purpose of the Study:

  • To investigate disruptions in water molecule diffusional anisotropy in pyramidal and extra-pyramidal regions in ALS patients.
  • To assess the utility of voxel-based DTI and tractography in identifying affected neuronal tissues in ALS.

Main Methods:

  • Studied seven probable ALS patients and 11 healthy controls.
  • Utilized voxel-based diffusion tensor analysis with statistical parametric mapping (SPM99).

Related Experiment Videos

  • Generated normalized corticospinal tractography from diffusion tensor data.

    • Main Results:

    • Significant decrease in fractional anisotropy (FA) observed in the ALS group.
    • FA reduction localized to right frontal subgyral white matter and left frontal precentral white matter.
    • Affected areas corresponded to the corticospinal tract map.

    Conclusions:

    • Voxel-based DTI combined with tractography can non-invasively identify affected neuronal tissues in ALS.
    • This approach may aid in determining the location and extent of neurological damage in ALS patients.