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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MDPI AG
2021-02-01
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| Series: | Brain Sciences |
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| Online Access: | https://www.mdpi.com/2076-3425/11/3/307 |
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| author | Yutaro Takayama Naoki Ikegaya Keiya Iijima Yuiko Kimura Suguru Yokosako Norihiro Muraoka Kenzo Kosugi Yuu Kaneko Tetsuya Yamamoto Masaki Iwasaki |
| author_facet | Yutaro Takayama Naoki Ikegaya Keiya Iijima Yuiko Kimura Suguru Yokosako Norihiro Muraoka Kenzo Kosugi Yuu Kaneko Tetsuya Yamamoto Masaki Iwasaki |
| author_sort | Yutaro Takayama |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T06:09:49Z |
| format | Article |
| id | doaj.art-dfac4e9f3d274d24b0ed76d46ec8cfbd |
| institution | Directory Open Access Journal |
| issn | 2076-3425 |
| language | English |
| last_indexed | 2024-03-09T06:09:49Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Brain Sciences |
| spelling | doaj.art-dfac4e9f3d274d24b0ed76d46ec8cfbd2023-12-03T12:00:22ZengMDPI AGBrain Sciences2076-34252021-02-0111330710.3390/brainsci11030307Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth ElectrodesYutaro Takayama0Naoki Ikegaya1Keiya Iijima2Yuiko Kimura3Suguru Yokosako4Norihiro Muraoka5Kenzo Kosugi6Yuu Kaneko7Tetsuya Yamamoto8Masaki Iwasaki9Department of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanDepartment of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, JapanDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanDepartment of Neurosurgery, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, JapanDepartment of Neurosurgery, National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8551, JapanImplantation 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.https://www.mdpi.com/2076-3425/11/3/307epilepsyelectrode implantationsubdural electrodedepth electrodeelectrocorticogrampresurgical evaluation |
| spellingShingle | Yutaro Takayama Naoki Ikegaya Keiya Iijima Yuiko Kimura Suguru Yokosako Norihiro Muraoka Kenzo Kosugi Yuu Kaneko Tetsuya Yamamoto Masaki Iwasaki Single-Institutional Experience of Chronic Intracranial Electroencephalography Based on the Combined Usage of Subdural and Depth Electrodes Brain Sciences epilepsy electrode implantation subdural electrode depth electrode electrocorticogram presurgical evaluation |
| 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 | epilepsy electrode implantation subdural electrode depth electrode electrocorticogram presurgical evaluation |
| url | https://www.mdpi.com/2076-3425/11/3/307 |
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