Publications by authors named "Sherif A Elwan"
Objectives: Little is known about whether ictal single photon emission computed tomography (SPECT) during an isolated aura can localize the epileptogenic zone (EZ). This study seeks to evaluate the yield of ictal SPECT injection in isolated epileptic auras.
Methods: We identified 20 patients with focal epilepsy studied during 26 isolated auras by ictal interictal subtraction SPECT coregistered to magnetic resonance imaging (SISCOM).
Purpose: This study analyzes falsely localizing pseudotemporal ictal EEG patterns, to test if it is possible to differentiate them from those in "true" temporal lobe epilepsy.
Methods: We retrospectively studied 33 patients who had epilepsy surgery and a favorable outcome (Engel I), belonging to three groups: 10 patients (37 seizures) with pseudotemporal ictal patterns (PT), 12 patients (45 seizures) with mesial temporal epilepsy because of hippocampal sclerosis (HS), and 11 patients (41 seizures) with neocortical temporal epilepsy (NT). Ictal EEGs were analyzed visually according to predetermined criteria and by using a source localization program (BESA5.