Simultaneous EEG and functional MRI of epileptic activity: a case report

2001 | journal article. A publication of Göttingen

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​Simultaneous EEG and functional MRI of epileptic activity: a case report​
Baudewig, J. ; Bittermann, H.-J. ; Paulus, W. J.   & Frahm, J. ​ (2001) 
Clinical Neurophysiology112(7) pp. 1196​-1200​.​ DOI: https://doi.org/10.1016/S1388-2457(01)00562-4 

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Authors
Baudewig, Jürgen ; Bittermann, Hans-Joachim ; Paulus, Walter J. ; Frahm, Jens 
Abstract
Objectives: Attempts to localize the source of epileptic activity by linking electroencephalographic (EEG) abnormalities to blued oxygenation level-dependent (BOLD) magnetic resonance imaging (MRI) signal alterations art: hampered mainly by EEG distortions during MRI, subject motion, and unknown hemodynamic response characteristics. Methods: Using T2 -weighted echo-planar imaging at 2.0 T (2 s temporal resolution, 2x2x4 mm(3) spatial resolution). this work demonstrates strategies to alleviate some of these problems while studying a patient who had ideopathic generalized epilepsy with polyspike and slow-wave complexes. Results: Continuous EEG recordings during dynamic MRI (500 ms scanning, 1500 ms delay) and post-examination derivation of an EEG reference function for MRI analysis revealed positive BOLD MRI responses with temporal characteristics similar to those obtained fur functional challenges. Conclusions: The ability to map focal epileptic activity and/or associated cognitive processing provides new potential fur both epilepsy research and clinical patient management. (C) 2001 Elsevier Science Ireland Ltd. All rights I reserved.
Issue Date
2001
Journal
Clinical Neurophysiology 
ISSN
1388-2457

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