Ictal localization of temporal lobe seizures with scalp/sphenoidal recordings.
We assessed the reliability and accuracy of scalp/sphenodial recordings for ictal localization by retrospectively analyzing 706 noninvasive ictal recordings from 110 patients who subsequently underwent stereoencephalographic evaluation. Strictly defined unilateral temporal/sphenoidal ictal patterns correctly predicted findings of depth electrode examination in 82 to 94% of cases. These strictly defined predictive patterns could be detected with excellent interrater reliability. The patterns are misleading in only a minority of cases, but cannot be used in isolation for definite ictal localization.
Risinger
M W
MW
Department of Neurology, University of California, Los Angeles.
Engel
J
J
Van Ness
P C
PC
Henry
T R
TR
Crandall
P H
PH
D004569:Electroencephalography; D004833:Epilepsy, Temporal Lobe / Q000503:physiopathology*; D006801:Humans; D015588:Observer Variation; D012535:Scalp; D013100:Sphenoid Bone; D013702:Temporal Lobe / Q000503:physiopathology*