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55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e. V. (DGNC)
1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

25. bis 28.04.2004, Köln

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Functional neuronavigation in lesions of the central region by means of magneto-encephalography – practicability and clinical results

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  • corresponding author Imre Bondar - Department of Neurosurgery, Otto-von-Guericke-Universität, Magdeburg
  • R. Firsching - Department of Neurosurgery, Otto-von-Guericke-Universität, Magdeburg
  • S. Knape - Department of Neurology II, Otto-von-Guericke-Universität, Magdeburg
  • N. Noennig - Department of Neurology II, Otto-von-Guericke-Universität, Magdeburg
  • S. Heinze - Department of Neurology II, Otto-von-Guericke-Universität, Magdeburg

Deutsche Gesellschaft für Neurochirurgie. Ungarische Gesellschaft für Neurochirurgie. 55. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), 1. Joint Meeting mit der Ungarischen Gesellschaft für Neurochirurgie. Köln, 25.-28.04.2004. Düsseldorf, Köln: German Medical Science; 2004. DocJM III.08

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/dgnc2004/04dgnc0016.shtml

Published: April 23, 2004

© 2004 Bondar et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

Outline

Text

Introduction

MEG is increasingly being used for the noninvasive functional preoperative mapping and for intraoperative functional Neuronavigation in patients with brain tumors. The aim of the present study was to assess the practicability of MEG-supported functional neuronavigation (FN) and to evaluate the outcome in patients operated with the aid of FN.

Methods

From september 1997 until december 2003, a preoperative MEG was obtained in 63 patients with intracranial lesions in or adjacent to the central region. MEG was performed using a 148-channel whole-head biomagnetometer (Magnes 2500 WH, Bti, San Diego, USA). The central region was identified by means of magnetic source imaging following the application of tactile stimuli to the right and left index fingers. The surgical outcome was assessed on the 1st and 7th postoperative day.

Results

MEG source localizations could be integrated in all cases in the intraoperative FN. Complete removal of the lesion was accomplished in all 29 patients with a non-malignant lesion and in 23 out of 34 patients with a malignant tumor in the central region. 11 patients harboring a tumor in the central region experienced a transient deterioration of a preexistent hemiparesis, which however resolved in all cases with two exeptions up to the 7th postoperative day.

Discussion

MEG-supported FN appears to emerge as a useful and reliable additional tool for function-preserving operations of intracranial lesions of the central region.