Investigating Epilepsy: CT and MRI in Epilepsy.
Daniel K. Hallam, MD
Division of Neuroradiology
University of Washington and Harborview Medical Center
10-20% of all epilepsy is intractable, despite treatment with antiepileptic medications to therapeutic levels. Accurate preoperative localization of the epileptic focus helps significa- ntly in the intraoperative localization of lesion which ultimately determines postoperative control of seizures in a large number of patients treated surgically. Proliferation of cross- sectional imaging techniques over the last several decades has transformed the under- standing, evaluation, and management of patients with epilepsy. Commonly applied imaging techniques range from anatomic modalities of computerized tomography (CT) and especially magnetic resonance imaging (MRI) to modalities reflecting metabolism or function including nuclear medicine based examinations as well as MRI based examinations. This article is a review of the application of CT and MRI in the evaluation of epilepsy.
computerized tomography, epilepsy surgery, magnetic resonance imaging