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Related Concept Videos

Epilepsy and Seizures: Overview01:24

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Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
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Brain Imaging01:14

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Related Experiment Video

Updated: Apr 1, 2026

Author Spotlight: Advancing Pediatric Epilepsy Surgery in Children Through Novel Biomarkers and Enhanced Localization
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Neuroimaging evaluation in refractory epilepsy.

Ana M Granados1, Juan F Orejuela1, Sara Y Rodriguez-Takeuchi2

  • 1Department of Radiology, Fundación Valle de Lili, Colombia.

The Neuroradiology Journal
|October 3, 2015
PubMed
Summary
This summary is machine-generated.

Neuroimaging, including functional MRI and volumetry, effectively identifies epilepsy causes and seizure foci, outperforming neuropsychological tests for refractory epilepsy evaluation.

Keywords:
Epilepsymagnetic resonance imagingmesial temporal sclerosis

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Area of Science:

  • Neurology
  • Radiology
  • Medical Imaging

Background:

  • Refractory epilepsy poses diagnostic challenges.
  • Accurate localization of epileptogenic foci is crucial for surgical planning.

Purpose of the Study:

  • To compare neuroimaging techniques with neuropsychological tests and video-electroencephalography for evaluating refractory epilepsy.
  • To assess the utility of structural and functional MRI in a Colombian reference center.

Main Methods:

  • 29 patients with refractory epilepsy underwent structural and functional MRI (1.5 Tesla).
  • Tasks assessed language, verbal, and non-verbal memory during fMRI.
  • Volumetric analysis of hippocampi was performed.

Main Results:

  • Mesial temporal sclerosis identified in 13 patients; other causes included neoplastic masses and cortical atrophy.
  • Functional MRI and hippocampal volumetry showed perfect agreement (κ=1.00) for lateralizing foci.
  • Neuroimaging showed good agreement with video-EEG (κ=0.78) but mild agreement with neuropsychological tests (κ=0.24).

Conclusions:

  • Neuroimaging effectively assesses functional and structural damage in epilepsy.
  • It aids in surgical treatment selection, neuronavigation, and predicting outcomes.
  • Neuroimaging is a valuable tool for managing refractory epilepsy.