Validation and Safety Profile of a Novel, Noninvasive Fiducial Attachment for Stereotactic Robotic-Guided Stereoelectroencephalography: A Case Series.

We developed, tested, and validated a novel, noninvasive, Leksell G frame-based fiducial attachment, for use in stereotactic registration for stereoelectroencephalography (sEEG). Use of the device increased the number of fixed reference points available for registration, while obviating the need for additional scalp incisions. We report here on our experience and safety profile of using the device. We collected registration data using the fiducial device across 25 adult and pediatric patients with epilepsy consecutively undergoing robotic-guided sEEG for invasive epilepsy monitoring, treated between May 2022 and July 2023. ROSA One Brain was used for trajectory planning and electrode implantation. Postoperative clinical and radiographic data were computed and quantified, including mean registration error for all patients. Entry point, target point (TP), and angular errors were measured. Descriptive statistics and correlation coefficients for error were calculated. Twenty-five patients underwent robotic-guided sEEG implantation (11 patients, bilateral; 10 patients, left unilateral; 4 patients, right). The mean number of electrodes per patient was 18 ± 3. The average mean registration error was 0.77 ± 0.11 mm. All patients were implanted with Ad-Tech depth electrodes. No clinically relevant complications were reported. Analysis of trajectory error was performed on 446 electrodes. The median entry point error was 1.03 mm (IQR 0.69-1.54). The median TP error was 2.26 mm (IQR 1.63-2.93). The mean angular error was 0.03 radians (IQR 0.02-0.05). There was no significant correlation between root mean square error and lead error. Root mean square error did not appreciably change over time, nor were there any significant changes in average angular, entry point, or TP error metrics. A novel, noninvasive, Leksell G frame-based fiducial attachment was developed, tested, and validated, facilitating O-arm-based stereotactic registration for sEEG. This simple innovation maintained an excellent accuracy and safety profile for sEEG procedures in epilepsy patients, with the added advantages of providing additional reference points for stereotactic registration, without requiring additional scalp incisions.

Sharma A ，Song R ，Sarmey N ，Harasimchuk S ，Bulacio J ，Pucci F ，Rammo R ，Bingaman W ，Serletis D ... -  《-》

Integration of a lightweight and table-mounted robotic alignment tool with automated patient-to-image registration using robotic cone-beam CT for intracranial biopsies and stereotactic electroencephalography.

Truckenmueller P ，Früh A ，Kissner JF ，Moser NK ，Misch M ，Faust K ，Onken J ，Vajkoczy P ，Xu R ... -  《Neurosurgical Focus》

Initial United States experience with Medtronic Stealth Autoguide cranial robotic guidance platform.

Atai NA ，Mehta VA 《-》

Robot-assisted insular stereoelectroencephalography in pediatric drug-resistant epilepsy: accuracy and diagnostic value.

Insular epilepsy is a well-known cause of drug-resistant epilepsy (DRE) in the pediatric population. It can be a source of surgical epilepsy treatment failures when not ruled out pre-operatively. Non-invasive methods often provide limited information about its existence, being the invasive methods necessary to diagnose it in the vast majority of cases. The most used is stereoelectroencephalography (SEEG). We report a series of DRE pediatric patients in which insular SEEG was performed to rule out insular epilepsy. We performed a retrospective review of pediatric DRE patients operated on SEEG including insular electrodes between April 2016 and September 2022. We described the different trajectories used (orthogonal or oblique) and surgical techniques. After implantation, we assessed electrodes' precision using three measures: entry point location error (EPLE), target point location error (TPLE), and target deviation (TD). We also reported complications that occurred with this technique as well as the diagnostic information provided. Overall, 32 DRE patients were operated on SEEG including insular electrodes. Four hundred one electrodes were implanted, 148 (39.91%) of whom were directed to the insula. One hundred twelve followed an orthogonal trajectory, and 36 were oblique. The mean EPLE was 1.45 mm, TPLE was 1.88 mm and TD was 0.71 mm. Three patients suffered from frontal hematoma, two of them diagnosed on post-operative MRI and one who required surgery, with no sequelae. One patient suffered from meningitis treated with antibiotics with no permanent sequelae. Nine patients (28.13%) had the insula included in the epileptogenic zone. Insular epilepsy has to be ruled out in DRE patients when little suspicion is obtained after non-invasive testing. This is especially important in the pediatric population, in which seizure semiology is more difficult to characterize and failures to control epilepsy have devastating consequences in neurocognitive development and scholarship. Given its relative low rate of relevant complications and potential benefits, we should consider widening the inclusion criteria for insular SEEG monitoring.

González-Crespo A ，Brugada-Bellsolà F ，Candela-Cantó S ，Calvo JA ，Arboix JR ，Bernal JH ... -  《-》

Superior accuracy and precision of SEEG electrode insertion with frame-based vs. frameless stereotaxy methods.

Girgis F ，Royz E ，Kennedy J ，Seyal M ，Shahlaie K ，Saez I ... -  《-》