Positions of subdural strip electrodes in a 16-year-old male adolescent with pharmacorefractory focal epilepsy resulting from tuberous sclerosis. Positions.

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Presentation transcript:

Positions of subdural strip electrodes in a 16-year-old male adolescent with pharmacorefractory focal epilepsy resulting from tuberous sclerosis. Positions of subdural strip electrodes in a 16-year-old male adolescent with pharmacorefractory focal epilepsy resulting from tuberous sclerosis. Invasive recordings were necessary to identify the electrophysiologically leading tuber of three tubers shown on MR images. Recordings showed a seizure-onset zone over the right temporal tuber with rapid spread to the frontal cortex; surgical excision of the temporal tuber based on the recordings rendered the patient seizure free.A, Schematic displays the planned implantation of subdural strip electrodes. R indicates right.B, Lateral curvilinear reformation shows the cortical surface with four overlying subdural strip electrodes consisting of six electrode contacts each (green). Whereas planar MR imaging sections (not shown) were difficult to interpret because of the underlying convexity of the cortical surface, the curvilinear reformation clearly depicts the spatial relationships between electrodes and the sylvian fissure and cortical gyrus. Andreas H.-J. Schulze-Bonhage et al. AJNR Am J Neuroradiol 2002;23:400-403 ©2002 by American Society of Neuroradiology