Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes

Implantation of subdural electrodes on the brain surface is still widely performed as one of the “gold standard methods” for the presurgical evaluation of epilepsy. Stereotactic insertion of depth electrodes to the brain can be added to detect brain activities in deep-seated lesions to which surface...

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Autores principales: Takayama, Yutaro, Ikegaya, Naoki, Iijima, Keiya, Kimura, Yuiko, Yokosako, Suguru, Muraoka, Norihiro, Kosugi, Kenzo, Kaneko, Yuu, Yamamoto, Tetsuya, Iwasaki, Masaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000142/
https://www.ncbi.nlm.nih.gov/pubmed/33671088
http://dx.doi.org/10.3390/brainsci11030307
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author Takayama, Yutaro
Ikegaya, Naoki
Iijima, Keiya
Kimura, Yuiko
Yokosako, Suguru
Muraoka, Norihiro
Kosugi, Kenzo
Kaneko, Yuu
Yamamoto, Tetsuya
Iwasaki, Masaki
author_facet Takayama, Yutaro
Ikegaya, Naoki
Iijima, Keiya
Kimura, Yuiko
Yokosako, Suguru
Muraoka, Norihiro
Kosugi, Kenzo
Kaneko, Yuu
Yamamoto, Tetsuya
Iwasaki, Masaki
author_sort Takayama, Yutaro
collection PubMed
description Implantation of subdural electrodes on the brain surface is still widely performed as one of the “gold standard methods” for the presurgical evaluation of epilepsy. Stereotactic insertion of depth electrodes to the brain can be added to detect brain activities in deep-seated lesions to which surface electrodes are insensitive. This study tried to clarify the efficacy and limitations of combined implantation of subdural and depth electrodes in intractable epilepsy patients. Fifty-three patients with drug-resistant epilepsy underwent combined implantation of subdural and depth electrodes for long-term intracranial electroencephalography (iEEG) before epilepsy surgery. The detectability of early ictal iEEG change (EIIC) were compared between the subdural and depth electrodes. We also examined clinical factors including resection of MRI lesion and EIIC with seizure freedom. Detectability of EIIC showed no significant difference between subdural and depth electrodes. However, the additional depth electrode was useful for detecting EIIC from apparently deep locations, such as the insula and mesial temporal structures, but not in detecting EIIC in patients with ulegyria (glial scar). Total removal of MRI lesion was associated with seizure freedom. Depth electrodes should be carefully used after consideration of the suspected etiology to avoid injudicious usage.
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spelling pubmed-80001422021-03-28 Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes Takayama, Yutaro Ikegaya, Naoki Iijima, Keiya Kimura, Yuiko Yokosako, Suguru Muraoka, Norihiro Kosugi, Kenzo Kaneko, Yuu Yamamoto, Tetsuya Iwasaki, Masaki Brain Sci Article Implantation of subdural electrodes on the brain surface is still widely performed as one of the “gold standard methods” for the presurgical evaluation of epilepsy. Stereotactic insertion of depth electrodes to the brain can be added to detect brain activities in deep-seated lesions to which surface electrodes are insensitive. This study tried to clarify the efficacy and limitations of combined implantation of subdural and depth electrodes in intractable epilepsy patients. Fifty-three patients with drug-resistant epilepsy underwent combined implantation of subdural and depth electrodes for long-term intracranial electroencephalography (iEEG) before epilepsy surgery. The detectability of early ictal iEEG change (EIIC) were compared between the subdural and depth electrodes. We also examined clinical factors including resection of MRI lesion and EIIC with seizure freedom. Detectability of EIIC showed no significant difference between subdural and depth electrodes. However, the additional depth electrode was useful for detecting EIIC from apparently deep locations, such as the insula and mesial temporal structures, but not in detecting EIIC in patients with ulegyria (glial scar). Total removal of MRI lesion was associated with seizure freedom. Depth electrodes should be carefully used after consideration of the suspected etiology to avoid injudicious usage. MDPI 2021-02-28 /pmc/articles/PMC8000142/ /pubmed/33671088 http://dx.doi.org/10.3390/brainsci11030307 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Takayama, Yutaro
Ikegaya, Naoki
Iijima, Keiya
Kimura, Yuiko
Yokosako, Suguru
Muraoka, Norihiro
Kosugi, Kenzo
Kaneko, Yuu
Yamamoto, Tetsuya
Iwasaki, Masaki
Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes
title Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes
title_full Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes
title_fullStr Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes
title_full_unstemmed Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes
title_short Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes
title_sort single-institutional experience of chronic intracranial electroencephalography based on the combined usage of subdural and depth electrodes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000142/
https://www.ncbi.nlm.nih.gov/pubmed/33671088
http://dx.doi.org/10.3390/brainsci11030307
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