Techniques for placement of stereotactic electroencephalographic depth electrodes: Comparison of implantation and tracking accuracies in a cadaveric human study

Epilepsia
Jaes C JonesJorge Gonzalez-Martinez

Abstract

Stereotactic electroencephalography (SEEG) is used for the evaluation and identification of the epileptogenic zone (EZ) in patients suffering from medically refractory seizures and relies upon the accurate implantation of depth electrodes. Accurate implantation is critical for identification of the EZ. Multiple electrodes and implantation systems exist, but these have not previously been systematically evaluated for implantation accuracy. This study compares the accuracy of two SEEG electrode implantation methods. Thirteen "technique 1" electrodes (applying guiding bolts and external stylets) and 13 "technique 2" electrodes (without guiding bolts and external stylets) were implanted into four cadaver heads (52 total of each) according to each product's instructions for use using a stereotactic robot. Postimplantation computed tomography scans were compared to preimplantation computed tomography scans and to the previously defined targets. Electrode entry and final depth location were measured by Euclidean coordinates. The mean errors of each technique were compared using linear mixed effects models. Primary analysis revealed that the mean error difference of the technique 1 and 2 electrodes at entry and target favored the techn...Continue Reading

References

Jan 1, 1994·Acta Neurologica Scandinavica. Supplementum·C MunariA L Benabid
Jan 1, 1994·Acta Neurologica Scandinavica. Supplementum·G Avanzini
Nov 27, 1999·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·P Jayakar
Jul 21, 2005·Journal of Neurosurgery·Ashesh D MehtaTheodore H Schwartz
Jan 11, 2014·Journal of Neurosurgery·Jorge Gonzalez-MartinezImad Najm
Nov 2, 2014·Journal of Neurosurgery·Daniel von LangsdorffDenys Fontaine
Sep 30, 2015·Neurosurgery·Jorge González-MartínezWilliam Bingaman
May 4, 2017·Neurosurgical Focus·Alessandro De BenedictisCarlo Efisio Marras

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Citations

Jan 26, 2021·Epilepsy & Behavior Reports·Angela WabulyaEldad Hadar
Apr 30, 2021·Frontiers in Neurology·Daniel L DraneAmmar Kheder

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