Magnetoencephalography and Ictal SPECT in Patients with Failed Epilepsy Surgery

Approximately 30% of patients with intractable focal epilepsy still have recurring seizures after the first resective surgery (Spencer and Huh, 2008). In these patients, re-evaluation for a potential reoperation can be a worthwhile attempt. Previous studies reported reoperation rates to be between 35.9% and 65.2% in patients with unfavorable outcome after initial surgery; seizure-free rate vary considerably among studies and ranged from 9.5 to 57.1%, and was estimated at 36.6% across all the studies (Surges and Elger, 2013).

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