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Usefulness of Intravascular EEG : an Intracranial EEG Recording from Intravascular Electrodes in the Patient of Temporal Lobe Epilepsy

Research Project

Project/Area Number 12670965
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Psychiatric science
Research InstitutionKURUME UNIVERSITY

Principal Investigator

ISHIDA Shigenobu (2001-2002)  Kurume University School of Medicine, assistant Professor, 医学部, 講師 (30248405)

富田 義之 (2000)  久留米大学, 医学部, 助手 (20312142)

Co-Investigator(Kenkyū-buntansha) MOTOHKA Hiromichi  Kurume University School of Medicine, research associate, 医学部, 助手 (10281536)
ISHIBASHI Masatoshi  Kurume University School of Medicine, assistant Professor, 医学部, 助教授 (20168256)
ABE Toshi  Kurume University School of Medicine, assistant Professor, 医学部, 講師 (90167940)
石田 重信  久留米大学, 医学部, 講師 (30248405)
島本 宝哲  久留米大学, 医学部, 講師 (20206189)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2002: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
Keywordsintravascular electrode / EEG / presurgical extracranial study / temporal lobe epilepsy / guide wire
Research Abstract

We performed EEG with intravascular electrodes (intravascular EEG) as a presurgical extracranial study during the Wada procedure to detect the epileptiform discharges originating specifically from the temporal lobe(TLE). In this study of nine patients with temporal lobe epilepsy, we evaluated the usefulness of this technique for comparison with a simultaneously recorded scalp EEG, furthermore with the results of chronic intracranial EEG recordings.
The subjects in this study were 9 patients with medically intractable TLE. After giving informed consent, we placed intravascular electrodes into bilateral middle meningeal artery at the level of the for amen spinosum, placing the electrodes to the inferior surface of each temporal lobe. The intravascular EEG was recorded for about one hour while scalp EEG with sphenoidal (SP) electrodes was simultaneously recorded.
The intravascular EEG demonstrated clear epileptiform discharges, sometimes even when they were absent on the simultaneously reco … More rded scalp EEG. As for the lateralization of the epileptiform discharges recorded from intravascular EEGs, in 6 of 9 patients, the epileptiform discharges were observed only at the unilateral intravascular electrode which lateralization was agreed with that of the ictal patterns obtained from subsequent intracranial recordings. In 2 patients, although epileptiform discharges were demonstrated bilaterally, most of the epileptiform discharges were predominantly observed at the unilateral intravascular electrode. In the remaining 1 case intravascular EEG revealed bilateral epileptiform discharges, however, the ictal patterns from intracranial EEG also showed bilaterally. The intravascular EEG agreed with lateralization of epileptiform discharges obtained from subsequent intracranial recordings.
This intravascular EEG can detect the epileptiform discharges more sensitive than SP electrode. Although the duration of recording is limited, intravascular EEG appears to be useful because it can be performed easily, safely and relatively painlessly in the course of angiography. Less

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 高山克彦: "脳血管内脳波 -側頭葉てんかんへの応用-"医学のあゆみ. 193. 487-491 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 高山克彦: "側頭葉てんかんの術前検査における脳血管内電極脳波の有用性"九州精神神経学雑誌. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takayama K. et al.: "Usefulness of EEC recording from intravascular electrodes (in Japanese)"Journal of clinical and experimental medicine. 193. 487-491 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Takayama K. et al.: "Usefulness of Intravascular EEG : an Intracranial EEG Recording from Intravascular Electrodes in the Patient of Temporal Lobe Epilepsy (in Japanese)"Kyushu neuropsychiatry. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary

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Published: 2000-04-01   Modified: 2016-04-21  

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