Abstract
Successful epilepsy surgery requires accurate localization of the zone of seizure
onset and its complete removal without causing any permanent neurological deficits.
While clinical semiology, ictal EEG recordings, and neuropsychological testing are
all useful in defining the seizure focus, advanced neuroimaging has emerged as the
most important localizing tool. Structural and metabolic imaging can now identify
subtle cortical abnormalities that if consistent with other presurgical evaluation
investigations, can improve surgical outcomes. Functional imaging can also be helpful
in defining eloquent cortex and its relationship to planned surgical resection sites
to reduce the risk of neurological impairment. This article explores several advanced
neuroimaging techniques and their role in the surgical treatment of epilepsy.
Keywords
epilepsy - MRI - PET - EEG - surgery
