Accuracy and Feasibility Analysis of SEEG Electrode Implantation using the VarioGuide Frameless Navigation System in Patients with Drug-Resistant Epilepsy

Shiwei Song; Yihai Dai; Zhen Chen; Songsheng Shi

doi:10.1055/s-0040-1721002

Journal of Neurological Surgery Part A: Central European Neurosurgery, Table of Contents

J Neurol Surg A Cent Eur Neurosurg 2021; 82(05): 430-436
DOI: 10.1055/s-0040-1721002

Original Article

Accuracy and Feasibility Analysis of SEEG Electrode Implantation using the VarioGuide Frameless Navigation System in Patients with Drug-Resistant Epilepsy

Shiwei Song

¹Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China

,

Yihai Dai

¹Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China

,

Zhen Chen

¹Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China

,

Songsheng Shi

¹Department of Neurosurgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China

› Author Affiliations

Abstract

Objective The objective of the study was to evaluate the feasibility and accuracy of frameless stereoelectroencephalography (SEEG) electrode implantation in patients with drug-resistant epilepsy using the VarioGuide system.

Methods The VarioGuide frameless navigation system was used to implant SEEG electrodes in patients with medically drug-resistant epilepsy. Demographic data, surgery duration, number of electrodes, and complications were retrospectively analyzed. Accuracy was compared by measuring the distance between the planned and actual electrode positions as determined by postoperative computed tomography images.

Results A total of 141 SEEG electrodes were implanted in 19 patients from May 2015 to December 2018 with an average of 7.42 (range: 4–10) leads per patient. The average entry point localization error (EPLE) was 1.96 ± 0.47 mm (range: 0.32–3.29) and average target point localization error (TPLE) was 2.47 ± 0.79 mm (range: 0.72–4.83). The average operating time per lead (OTPL) was 14.16 ± 2.68 minutes (range: 8.64–21.58). No complications occurred.

Conclusion The VarioGuide frameless navigation system can be an effective method for SEEG electrode implantation in patients with drug-resistant epilepsy, particularly when the electrodes are concentrated in a relatively small region and the number of implanted electrodes is small.

Keywords

VarioGuide - drug-resistant epilepsy - frameless SEEG implantation

Full Text

References

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