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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 23:400-403, March 2002
© 2002 American Society of Neuroradiology

Technical Note
BRAIN

Visualization of Subdural Strip and Grid Electrodes Using Curvilinear Reformatting of 3D MR Imaging Data Sets

Andreas H.-J. Schulze-Bonhage^a, Hans J. Huppertz^a, Roch M. Comeau^d, Jürgen B. Honegger^b, Joachim M. Spreer^c and Josef K. Zentner^b

^a Epilepsy Unit, University of Freiburg, Germany
^b Departments of General Neurosurgery, University of Freiburg, Germany
^c Neuroradiology, University of Freiburg, Germany
^d Montreal Neurological Institute, Quebec, Canada

Address reprint requests to Dr Andreas Schulze-Bonhage, Sektion Prächirurgische Epilepsiediagnostik, Neurozentrum der Universität Freiburg, Breisacher Str 64, D-79106 Freiburg, Germany

Summary: Curvilinear reformatting of 3D MR imaging data sets was used to visualize the position of subdural strip and grid electrodes relative to the underlying cerebral cortex in patients with epilepsy who were undergoing invasive electroencephalographic recordings. The contour of the cortical surface was delineated interactively, and topographical relationships among surface gyration, cortical lesions, and subdural electrodes were investigated by using serial convex planes parallel to the cortical surface. Electrode contacts could be marked and their positions projected to underlying areas at different depths. This method is apt for routine purposes and allows electrode positions to be displayed with respect to cortical and subcortical regions of interest.

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				D. Kovalev, J. Spreer, J. Honegger, J. Zentner, A. Schulze-Bonhage, and H.-J. Huppertz Rapid and Fully Automated Visualization of Subdural Electrodes in the Presurgical Evaluation of Epilepsy Patients AJNR Am. J. Neuroradiol., May 1, 2005; 26(5): 1078 - 1083. [Abstract] [Full Text] [PDF]

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