Premium
Planned Ictal FDG PET Imaging for Localization of Extratemporal Epileptic Foci
Author(s) -
Meltzer Carolyn Cidis,
Adelson P. David,
Brenner Richard P.,
Crumrine Patricia K.,
Cott Anne,
Schiff David P.,
Townsend David W.,
Scheuer Mark L.
Publication year - 2000
Publication title -
epilepsia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.687
H-Index - 191
eISSN - 1528-1167
pISSN - 0013-9580
DOI - 10.1111/j.1528-1157.2000.tb00139.x
Subject(s) - ictal , nuclear medicine , medicine , epilepsy , pet imaging , neuroscience , positron emission tomography , psychology
Summary:Purpose : This work demonstrates the feasibility of planned ictal positron emission tomography (PET) with [ 18 F]fluoro‐2‐deoxy‐glucose (FDG) for localization of epileptic activity in patients with frequent partial seizures of extratem‐poral origin. Methods : Ictal PET imaging was performed in four patients (two men and two women, ages 28–61) with continuous or very frequent (every 3–15 min) partial seizures. All patients had abnormalities apparent on magnetic resonance (MR) or computed tomographic (CT) imaging, two with extensive brain lesions that precluded precise localization of the seizure focus with interictal PET or single‐photon emission tomography (SPECT) imaging. Results : Ictal PET imaging demonstrated a restricted area of focal hypermetabolism concordant with surface electroen‐cephalographic (EEG) recording in all cases. The PET images were registered to MR imaging data for further anatomic localization of hypermetabolic regions in three cases. The ictal PET data were used to guide neurosurgical intervention in one case. Conclusions : We conclude that planned ictal PET imaging may be a useful and potentially superior approach to ictal SPECT for identifying the epileptic focus in a selected group of patients with continuous or frequent simple partial seizures.