DIAGNOSTIC TESTING OF SEIZURE DISORDERS

Although a thorough history and physical examination remain the basis for the evaluation of patients with a possible seizure disorder, elect roencephalography (EEG) is a necessary extension of the neurologic exa mination. Most patients also require a magnetic resonance imaging (MRI ) scan to identify a potentially epileptogenic lesion. This article re views the technical considerations, common findings, and potential pit falls related to the use of EEG and MRI. Adjunctive tests such as ambu latory EEG, video/EEG, positron emission tomography, single photon emi ssion computed tomography, and serum evaluation also are discussed for use in specific circumstances.