Male, 50 years old, with epilepsy, pre laser fiber placement. Bilateral parietal approach depth electrodes are in place coursing along the medial temporal lobes. A small left temporal craniotomy was also performed through which a subdural electrode grid has been placed along the surface of the brain. No evidence of significant parenchymal edema or mass effect is seen within the limitations of artifact induced by electrodes. No pathologic intracranial enhancement is observed. The ventricles are normal in size and morphology.
Preprocedural imaging demonstrates bilateral parietal approach depth electrodes coursing along the medial temporal lobes, as well as a subdural electrode grid along the left temporal lobe.