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Stereo-Encephalography Versus Subdural Electrodes for Seizure Localization.

Irina Podkorytova1, Kathryn Hoes1, Bradley Lega1

  • 1Department of Neurological Surgery, University of Texas Southwestern Medical Center, 6363 Forest park road, Dallas, TX 75235, USA.

Neurosurgery Clinics of North America
|November 29, 2015
PubMed
Summary

Epileptologists can choose between subdural electrode grids (SDE) and stereo-EEG (SEEG) for seizure localization. This guide compares SDE and SEEG, aiding decisions for epilepsy surgery evaluations.

Keywords:
Epilepsy surgeryStereo-encephalography (SEEG)Subdural grids (SDG) or subdural electrodes (SDE)

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Area of Science:

  • Neurosurgery
  • Neurology
  • Epileptology

Background:

  • Intracranial electrodes are crucial for phase II evaluations in epilepsy surgery.
  • Subdural electrode grids (SDE) have been traditionally used for seizure localization in North America.
  • Stereo-encephalography (SEEG) using depth electrodes has gained popularity due to technological advancements.

Purpose of the Study:

  • To provide a guide for selecting between SEEG and SDE for intracranial seizure localization.
  • To compare the advantages and disadvantages of SEEG and SDE based on clinical experience.
  • To illustrate decision-making through paradigmatic case examples.

Main Methods:

  • Review of clinical experience with both SEEG and SDE.
  • Analysis of paradigmatic cases highlighting the strengths and weaknesses of each method.
  • Comparative evaluation of SEEG and SDE for seizure localization.

Main Results:

  • Both SEEG and SDE are offered at high-volume epilepsy surgery centers.
  • The choice between SEEG and SDE depends on specific patient factors and localization goals.
  • Paradigmatic cases demonstrate the distinct benefits and limitations of each approach.

Conclusions:

  • Understanding the nuances of SEEG and SDE is essential for optimal patient management.
  • Tailoring the choice of intracranial electrode to individual cases improves seizure localization accuracy.
  • This guide assists epileptologists and neurosurgeons in making informed decisions for epilepsy surgery planning.