Abstract
Background
Stereoelectroencephalography (SEEG) is an effective presurgical invasive evaluation for drug-resistant epilepsies. The introduction of robotic devices provides a simplified, accurate, and safe alternative to the conventional SEEG technique. We report our institutional experience with robot-assisted SEEG and compare its in vivo accuracy, operation efficiency, and safety with the more traditional SEEG workflow.
Methods
All patients with medically refractory focal epilepsy who underwent SEEG depth electrode implantation between 2014 and 2022 were included in this study. Technical advancements of the robot-assisted technique are described. Analyses of patient demographics, electrode implantation accuracy, operation time, and procedure-related complications were performed.
Results
One hundred and sixty-six patients underwent 167 SEEG procedures. The first 141 procedures were performed using a conventional approach involving a Leksell stereotactic system, and the last 26 procedures were robot-assisted. Among the 1726 depth electrodes that were inserted, the median entry point localization error was as follows: conventional (1.0 mm; range, 0.1–33.5 mm) and robot-assisted (1.1 mm; range, 0–4.8 mm) (P = 0.17). The median target point localization error was as follows: conventional (2.8 mm; range, 0.1–49 mm) and robot-assisted (1.8 mm; range, 0–30.3 mm) (P < 0.001). The median operation time was significantly reduced with the robot-assisted workflow (90 min vs. 77.5 min; P < 0.01). Total complication rates were as follows: conventional (17.7%) and robot-assisted (11.5%) (P = 0.57). Major complication rates were 3.5% and 7.7% (P = 0.77), respectively.
Conclusions
SEEG is a safe and highly accurate method that provides essential guidance for epilepsy surgery. Implementing SEEG in conjunction with multimodal planning systems and robotic devices can further increase safety margin, surgical efficiency, and accuracy.
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Data availability
The data that support the findings of this study are available on request from the corresponding author, CCL. The data are not publicly available due to the containing information that could compromise the privacy of research participants.
Abbreviations
- EZ:
-
Epileptogenic zone
- SEEG:
-
Stereoelectroencephalography
- MRI:
-
Magnetic resonance imaging
- CT:
-
Computed tomography
- CTA:
-
Computed tomography angiography
- EP:
-
Entry point
- TP:
-
Target point
- LE:
-
Localization error
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Acknowledgements
We thank individuals who contributed to the study or manuscript preparation but who do not fulfill all the criteria of authorship.
Funding
The study was supported in part by the National Health Research Institutes, under project NHRI-EX112- 11006NC. This support was in the form of personnel, access to clinical databases, and supplies related to SEEG.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the Taipei Veterans General Hospital and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Han, CL., Chou, CC., Chen, HH. et al. Frame-based versus robot-assisted stereo-electro-encephalography for drug-resistant epilepsy. Acta Neurochir 166, 85 (2024). https://doi.org/10.1007/s00701-024-05983-6
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DOI: https://doi.org/10.1007/s00701-024-05983-6