¹⁸F-FDG PET imaging predicts the epileptogenic zone prospectively in recurrent cryptogenic meningoencephalitis and with subsequent simple partial visual seizures

Abstract

¹⁸F-FDG PET scans have proven to be useful in the diagnosis and management of encephalitis patients. ¹⁸F-FDG PET scans are also standard of care in the evaluation of the pre-surgical epilepsy patient. Encephalitis patients that later on develop epilepsy may have useful imaging findings at the time of diagnosis. We present a case of ¹⁸F-FDG PET imaging in a patient with recurrent cryptogenic meningoencephalitis. ¹⁸F-FDG PET imaging after resolution of the encephalitis revealed hypometabolism in previous hypermetabolic areas. Hence, the initial ¹⁸F-FDG PET scan prospectively predicted the epileptogenic zone/seizure onset zone (EZ/SOZ)