gms | German Medical Science

57. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e. V. (DGNC)
Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

11. bis 14.05.2006, Essen

A new expression mode of magnetic brain activities – gradient magnetic field topography and its movie display, especially in epilepsy cases

Meeting Abstract

  • corresponding author K. Kurisu - Department of Neurosurgery, Hiroshima University Hospital, Hiroshima, Japan
  • A. Hashizume - Department of Neurosurgery, Hiroshima University Hospital, Hiroshima, Japan
  • K. Iida - Department of Neurosurgery, Hiroshima University Hospital, Hiroshima, Japan
  • H. Shirozu - Department of Neurosurgery, Hiroshima University Hospital, Hiroshima, Japan
  • K. Sugiyama - Department of Neurosurgery, Hiroshima University Hospital, Hiroshima, Japan

Deutsche Gesellschaft für Neurochirurgie. Japanische Gesellschaft für Neurochirurgie. 57. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie. Essen, 11.-14.05.2006. Düsseldorf, Köln: German Medical Science; 2006. DocSO.08.07

Die elektronische Version dieses Artikels ist vollständig und ist verfügbar unter: http://www.egms.de/de/meetings/dgnc2006/06dgnc215.shtml

Veröffentlicht: 8. Mai 2006

© 2006 Kurisu et al.
Dieser Artikel ist ein Open Access-Artikel und steht unter den Creative Commons Lizenzbedingungen (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.de). Er darf vervielf&aauml;ltigt, verbreitet und &oauml;ffentlich zug&aauml;nglich gemacht werden, vorausgesetzt dass Autor und Quelle genannt werden.


Gliederung

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Objective: To evaluate epileptic phenomenon in patients with intractable epilepsy by gradient magnetic field topography and its movie display.

Methods: The authors have created gradient magnetic field topography and its movie display to recognize the magnetic brain activities. We have used Neuromag system with 102 orthogonal paired planar type gradiometers. Measured data at 102 sensor points were projected onto the surface of patient’s individual brain. Gradient magnetic field topographies were calculated after interpolation among the projected sensors’ points. Furthermore, hundreds or thousands of consecutive topographies were packed as motion picture experts group (MPEG) files. In this way, we can observe the change and spread of biomagnetic activities on the screen of the PC monitor. In addition, we compared the data with those recorded by subdural continuous recording in some cases.

Results: Information provided by this method was very helpful to evaluate epileptic brain activities as compared with conventional EEG and continuous EEG monitoring estimation. It was very interesting and exciting that we can estimate the epileptogenic zone by this method which is recorded during interictal periods.

Conclusions: Using this method, we can evaluate epileptic brain activity visually and topographically in intractable epilepsy patients. In the presentation, we will show the typical case in a movie.