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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao World Neurosurgeryarrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
World Neurosurgery
Article . 2017 . Peer-reviewed
License: Elsevier TDM
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Implantation of Responsive Neurostimulation for Epilepsy Using Intraoperative Computed Tomography: Technical Nuances and Accuracy Assessment

Authors: Mena G. Kerolus; Ryan B. Kochanski; Marvin Rossi; Michael Stein; Richard W. Byrne; Sepehr Sani;

Implantation of Responsive Neurostimulation for Epilepsy Using Intraoperative Computed Tomography: Technical Nuances and Accuracy Assessment

Abstract

Implantation of responsive neurostimulation (RNS) system has been previously discussed in the literature but there is a paucity of data on target accuracy and the use of intraoperative imaging. We describe our experience with 8 patients using intraoperative computed tomography (iCT) during implantation of the NeuroPace RNS system.A frame-based system was used. CT images were obtained and merged with preoperative magnetic resonance imaging and metabolic imaging studies to calculate target coordinates. An occipital entry point with a trajectory parallel to the hippocampus was planned. The leads were placed in the parahippocampal white matter circuitry. iCT images were obtained for immediate confirmation of lead accuracy. Images were computationally merged and superimposed on the magnetic resonance images and final coordinates of the distal contact were compared with the intended target. Targeting error was calculated in each axis as well as Euclidean distance. Preoperative and postoperative seizure frequency per month was used to evaluate outcomes.Fifteen occipitotemporal leads were placed in 8 patients. The vector error means in the x, y, and z planes were 0.57 mm ± 0.44 mm, 0.71 mm ± 0.84 mm, and 2.23 mm ± 1.43 mm, respectively. The mean Euclidean distance error was 2.63 mm ± 1.32 mm. The z axis was found to have a significantly higher error [F2,42 = 12.955; P = 0.001] when compared with the x or y axes. The median preoperative and postoperative seizure frequency per month was 3.4 and 0.78 seizures, respectively.Frame-based stereotactic implantation of the NeuroPace RNS system using iCT is feasible and allows for intraoperative target accuracy confirmation and correction.

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Keywords

Adult, Male, Intraoperative Care, Brain, Middle Aged, Magnetic Resonance Imaging, Neurosurgical Procedures, Prosthesis Implantation, Stereotaxic Techniques, Epilepsy, Complex Partial, Implantable Neurostimulators, Surgery, Computer-Assisted, Preoperative Care, Humans, Female, Tomography, X-Ray Computed, Neuronavigation

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Average
Average
Top 10%
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