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Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
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Tracking posttraumatic hemianopia.

Thomas Decramer1,2, Karel Van Keer3, Peter Stalmans3

  • 1Department of Neurosurgery, University Hospitals Leuven, Herestraat 49, 3000, Leuven, Belgium. thomas.decramer@uzleuven.be.

Journal of Neurology
|November 8, 2017
PubMed
Summary
This summary is machine-generated.

Advanced imaging like Diffusion Tensor Imaging (DTI) can detect optic pathway damage after traumatic brain injury. However, findings evolve over time due to Wallerian degeneration, requiring careful interpretation.

Keywords:
Diffusion tensor imagingHemianopiaTraumatic brain injuryWallerian degeneration

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Area of Science:

  • Neuroimaging
  • Neurotrauma
  • Ophthalmology

Background:

  • Posttraumatic hemianopia often results from retro-chiasmatic lesions.
  • Diagnosing optic pathway damage can be challenging with conventional imaging methods.

Observation:

  • A case study analyzed MRI, Diffusion Tensor Imaging (DTI), and Optical Coherence Tomography (OCT) in a patient with posttraumatic hemianopia.
  • DTI revealed decreased fractional anisotropy (FA) in optic tracts and radiations early post-trauma.
  • Later imaging showed isolated optic tract FA decrease and Wallerian degeneration signs.

Findings:

  • Early DTI abnormalities were diffuse and included intact structures.
  • Late DTI showed specific optic tract degeneration.
  • OCT confirmed retinal thinning correlating with visual field loss.

Implications:

  • Advanced imaging techniques are valuable for investigating posttraumatic hemianopia.
  • Interpreting imaging results requires considering the timing of assessment due to evolving Wallerian degeneration.
  • Combining DTI and OCT offers a comprehensive view of visual pathway damage progression.