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Related Experiment Videos

Voxel-based morphometry of herpes simplex encephalitis.

D R Gitelman1, J Ashburner, K J Friston

  • 1Cognitive Neurology and Alzheimer's Disease Center, Department of Neurology, Northwestern University Medical School, Chicago, Illinois 60611, USA.

Neuroimage
|April 18, 2001
PubMed
Summary
This summary is machine-generated.

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Voxel-based morphometry (VBM) effectively identified gray matter abnormalities in patients with herpes simplex encephalitis (HSE). Despite challenges with distorted brains, VBM demonstrated its utility in detecting in vivo anatomical changes in HSE.

Area of Science:

  • Neuroimaging
  • Neuroanatomy
  • Neurology

Background:

  • Voxel-based morphometry (VBM) is a key automated technique for analyzing brain matter density changes.
  • It avoids operator bias, making it valuable for studying neurological and psychiatric disorders.
  • Assessing VBM on structurally abnormal brains is crucial for understanding its limitations.

Purpose of the Study:

  • To evaluate VBM's performance on severely distorted brains, specifically in patients recovered from herpes simplex encephalitis (HSE).
  • To assess VBM's anatomical face validity and identify potential issues when applied to abnormal brain structures.
  • To demonstrate in vivo gray matter changes associated with HSE using VBM.

Main Methods:

  • Voxel-based morphometry (VBM) was used to analyze gray matter concentration.

Related Experiment Videos

  • Five patients recovered from herpes simplex encephalitis (HSE) were compared with age- and sex-matched controls.
  • Automated segmentation and standardized parametric statistics were employed.

    • Main Results:

    • VBM successfully identified several regional gray matter abnormalities in HSE patients.
    • The findings were consistent with the known histopathology of HSE.
    • Challenges were encountered in normalizing and segmenting the distorted brains.

    Conclusions:

    • VBM can detect in vivo gray matter changes in HSE, even with significant brain distortion.
    • The study highlights potential difficulties and limitations of VBM when applied to severely abnormal brains.
    • VBM's utility in neurodegenerative diseases warrants further investigation given these findings.