StereoEEG

StereoEEG (SEEG) is the gold-standard, minimally invasive procedure using stereotactically placed depth electrodes to precisely map the epileptogenic zone for refractory epilepsy surgery.

StereoEEG (SEEG) is your Phase 2 diagnostic tool for refractory focal epilepsy: it delivers the precision data required for definitive surgical planning. This minimally invasive procedure involves stereotactically implanting 10 to 20 thin depth electrodes (about 0.8 mm in diameter) directly into the brain. We use advanced neuroimaging (MRI, 3D angiography) and robotic assistance (e.g., ROSA®) to ensure sub-millimetric accuracy, safely accessing deep structures like the insula and hippocampus—areas inaccessible to older subdural grids. The goal is clear: pinpoint the exact seizure onset zone (EZ) to guide targeted treatment (resection, laser ablation, or neuromodulation). This technique, a modern evolution of the 1950s Bancaud and Talairach method, offers superior coverage with significantly lower morbidity.

https://my.clevelandclinic.org/health/treatments/22907-stereoelectroencephalography-seeg