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Related Experiment Video

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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
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Brain Structure Alterations in Hemifacial Spasm: A Diffusion Tensor Imaging Study.

Jian Zhang1,2, Qingyang Yu1,3, Peng Gu3

  • 1Tianjin Key Laboratory of Neurotrauma Repair, Institute of Traumatic Brain Injury and Neuroscience, Characteristic Medical Center of Chinese People's Armed Police Forces, Dongli District, Tianjin, China.

Clinical EEG and Neuroscience
|December 8, 2020
PubMed
Summary
This summary is machine-generated.

Diffusion tensor imaging revealed increased white matter integrity in the superior longitudinal fasciculus of patients with left-sided hemifacial spasm (HFS). These findings may aid in HFS diagnosis and understanding its underlying mechanisms.

Keywords:
active segment selectionadultsattention-deficit hyperactivity disorderneurometric analysissensory gatingsupport vector machine (SVM)

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Area of Science:

  • Neuroimaging
  • Neurology
  • White Matter Research

Background:

  • Hemifacial spasm (HFS) is a neurological disorder affecting facial muscles.
  • Understanding the underlying white matter changes in HFS is crucial for diagnosis and treatment.
  • Diffusion tensor imaging (DTI) is a powerful tool for assessing white matter integrity.

Purpose of the Study:

  • To investigate white matter integrity in patients with left-sided hemifacial spasm (HFS) using DTI.
  • To explore the relationship between white matter changes and clinical features of HFS.
  • To determine if DTI metrics can serve as diagnostic markers for HFS.

Main Methods:

  • Recruited 36 patients with left-sided HFS and 36 healthy controls.
  • Utilized diffusion tensor imaging (DTI) to acquire white matter data.
  • Applied tract-based spatial statistics (TBSS) for comprehensive analysis of white matter microstructure.

Main Results:

  • Significantly increased fractional anisotropy (FA) in the bilateral superior longitudinal fasciculus of HFS patients (P < 0.05).
  • Observed trends for decreased radial diffusivity in the superior longitudinal fasciculus.
  • FA in the left superior longitudinal fasciculus positively correlated with HFS duration (r = 0.352, P = .041) and spasm severity (r = 0.416, P = .014).

Conclusions:

  • Increased FA in the superior longitudinal fasciculus may indicate altered myelination or axonal organization in HFS.
  • These microstructural changes could be linked to impaired sleep quality and visuospatial function in HFS patients.
  • TBSS-derived FA changes in the superior longitudinal fasciculus show potential as a diagnostic biomarker for hemifacial spasm.