The localizing yield of sphenoidal and anterior temporal electrodes in ictal recordings: A comparison study

Andres M Kanner, Jaime Parra, Antonio Gil-Nagel, Arnoldo Soto, Sue Leurgans, Jorge Iriarte, Leyla DeToledo-Morrell, Susan Palac

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Purpose: To compare the localizing yield of sphenoidal electrodes placed under fluoroscopic guidance (SEs) and anterior temporal electrodes (ATEs) in ictal recordings from a group of patients with seizure disorders of anterior temporal origin. Methods: We compared ictal recordings of 156 seizures obtained with SEs and ATEs from 40 consecutive patients with seizures of anterior temporal origin. Four electroencephalographers reviewed ictal recordings independently and blind to the patients' identity, presurgical data, and inclusion of ATEs or SEs. Outcome variables included (a) number of correctly localized seizures with SE and ATE recordings by at least three raters; (b) number of ictal foci in which all seizures were localized only with SEs; and (c) number of seizures in which SEs identified the ictal onset ≥5 s earlier than ATEs. Results: Interrater agreement among the four raters was significantly greater with SE than with ATE recordings (p < 0.0001). The number of seizures correctly localized was significantly greater with SEs (n = 144) than with ATEs (n = 99; p < 0.0001). All the seizures [n = 36 (23%)] originating from 14 ictal foci (29%) in 11 patients (27.5%) were localized only with SEs. Finally, the ictal onset was detected at SEs ≥5 s earlier than at ATEs in 67 (43%) seizures originating from 33 (69%) foci in 30 (75%) patients. Conclusions: SEs improve interrater agreement in the localization of seizures of anterior temporal origin, and in about one fourth of patients, SEs add ictal data not identified by ATEs.

Original languageEnglish (US)
Pages (from-to)1189-1196
Number of pages8
JournalEpilepsia
Volume43
Issue number10
DOIs
StatePublished - Oct 1 2002
Externally publishedYes

Fingerprint

Electrodes
Stroke
Seizures
Epilepsy

Keywords

  • Fluoroscopy
  • Intractable epilepsy
  • Mesial temporal sclerosis
  • Temporal lobe epilepsy

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

The localizing yield of sphenoidal and anterior temporal electrodes in ictal recordings : A comparison study. / Kanner, Andres M; Parra, Jaime; Gil-Nagel, Antonio; Soto, Arnoldo; Leurgans, Sue; Iriarte, Jorge; DeToledo-Morrell, Leyla; Palac, Susan.

In: Epilepsia, Vol. 43, No. 10, 01.10.2002, p. 1189-1196.

Research output: Contribution to journalArticle

Kanner, AM, Parra, J, Gil-Nagel, A, Soto, A, Leurgans, S, Iriarte, J, DeToledo-Morrell, L & Palac, S 2002, 'The localizing yield of sphenoidal and anterior temporal electrodes in ictal recordings: A comparison study', Epilepsia, vol. 43, no. 10, pp. 1189-1196. https://doi.org/10.1046/j.1528-1157.2002.06402.x
Kanner, Andres M ; Parra, Jaime ; Gil-Nagel, Antonio ; Soto, Arnoldo ; Leurgans, Sue ; Iriarte, Jorge ; DeToledo-Morrell, Leyla ; Palac, Susan. / The localizing yield of sphenoidal and anterior temporal electrodes in ictal recordings : A comparison study. In: Epilepsia. 2002 ; Vol. 43, No. 10. pp. 1189-1196.
@article{8ab91ae835644902b18343324e5df213,
title = "The localizing yield of sphenoidal and anterior temporal electrodes in ictal recordings: A comparison study",
abstract = "Purpose: To compare the localizing yield of sphenoidal electrodes placed under fluoroscopic guidance (SEs) and anterior temporal electrodes (ATEs) in ictal recordings from a group of patients with seizure disorders of anterior temporal origin. Methods: We compared ictal recordings of 156 seizures obtained with SEs and ATEs from 40 consecutive patients with seizures of anterior temporal origin. Four electroencephalographers reviewed ictal recordings independently and blind to the patients' identity, presurgical data, and inclusion of ATEs or SEs. Outcome variables included (a) number of correctly localized seizures with SE and ATE recordings by at least three raters; (b) number of ictal foci in which all seizures were localized only with SEs; and (c) number of seizures in which SEs identified the ictal onset ≥5 s earlier than ATEs. Results: Interrater agreement among the four raters was significantly greater with SE than with ATE recordings (p < 0.0001). The number of seizures correctly localized was significantly greater with SEs (n = 144) than with ATEs (n = 99; p < 0.0001). All the seizures [n = 36 (23{\%})] originating from 14 ictal foci (29{\%}) in 11 patients (27.5{\%}) were localized only with SEs. Finally, the ictal onset was detected at SEs ≥5 s earlier than at ATEs in 67 (43{\%}) seizures originating from 33 (69{\%}) foci in 30 (75{\%}) patients. Conclusions: SEs improve interrater agreement in the localization of seizures of anterior temporal origin, and in about one fourth of patients, SEs add ictal data not identified by ATEs.",
keywords = "Fluoroscopy, Intractable epilepsy, Mesial temporal sclerosis, Temporal lobe epilepsy",
author = "Kanner, {Andres M} and Jaime Parra and Antonio Gil-Nagel and Arnoldo Soto and Sue Leurgans and Jorge Iriarte and Leyla DeToledo-Morrell and Susan Palac",
year = "2002",
month = "10",
day = "1",
doi = "10.1046/j.1528-1157.2002.06402.x",
language = "English (US)",
volume = "43",
pages = "1189--1196",
journal = "Epilepsia",
issn = "0013-9580",
publisher = "Wiley-Blackwell",
number = "10",

}

TY - JOUR

T1 - The localizing yield of sphenoidal and anterior temporal electrodes in ictal recordings

T2 - A comparison study

AU - Kanner, Andres M

AU - Parra, Jaime

AU - Gil-Nagel, Antonio

AU - Soto, Arnoldo

AU - Leurgans, Sue

AU - Iriarte, Jorge

AU - DeToledo-Morrell, Leyla

AU - Palac, Susan

PY - 2002/10/1

Y1 - 2002/10/1

N2 - Purpose: To compare the localizing yield of sphenoidal electrodes placed under fluoroscopic guidance (SEs) and anterior temporal electrodes (ATEs) in ictal recordings from a group of patients with seizure disorders of anterior temporal origin. Methods: We compared ictal recordings of 156 seizures obtained with SEs and ATEs from 40 consecutive patients with seizures of anterior temporal origin. Four electroencephalographers reviewed ictal recordings independently and blind to the patients' identity, presurgical data, and inclusion of ATEs or SEs. Outcome variables included (a) number of correctly localized seizures with SE and ATE recordings by at least three raters; (b) number of ictal foci in which all seizures were localized only with SEs; and (c) number of seizures in which SEs identified the ictal onset ≥5 s earlier than ATEs. Results: Interrater agreement among the four raters was significantly greater with SE than with ATE recordings (p < 0.0001). The number of seizures correctly localized was significantly greater with SEs (n = 144) than with ATEs (n = 99; p < 0.0001). All the seizures [n = 36 (23%)] originating from 14 ictal foci (29%) in 11 patients (27.5%) were localized only with SEs. Finally, the ictal onset was detected at SEs ≥5 s earlier than at ATEs in 67 (43%) seizures originating from 33 (69%) foci in 30 (75%) patients. Conclusions: SEs improve interrater agreement in the localization of seizures of anterior temporal origin, and in about one fourth of patients, SEs add ictal data not identified by ATEs.

AB - Purpose: To compare the localizing yield of sphenoidal electrodes placed under fluoroscopic guidance (SEs) and anterior temporal electrodes (ATEs) in ictal recordings from a group of patients with seizure disorders of anterior temporal origin. Methods: We compared ictal recordings of 156 seizures obtained with SEs and ATEs from 40 consecutive patients with seizures of anterior temporal origin. Four electroencephalographers reviewed ictal recordings independently and blind to the patients' identity, presurgical data, and inclusion of ATEs or SEs. Outcome variables included (a) number of correctly localized seizures with SE and ATE recordings by at least three raters; (b) number of ictal foci in which all seizures were localized only with SEs; and (c) number of seizures in which SEs identified the ictal onset ≥5 s earlier than ATEs. Results: Interrater agreement among the four raters was significantly greater with SE than with ATE recordings (p < 0.0001). The number of seizures correctly localized was significantly greater with SEs (n = 144) than with ATEs (n = 99; p < 0.0001). All the seizures [n = 36 (23%)] originating from 14 ictal foci (29%) in 11 patients (27.5%) were localized only with SEs. Finally, the ictal onset was detected at SEs ≥5 s earlier than at ATEs in 67 (43%) seizures originating from 33 (69%) foci in 30 (75%) patients. Conclusions: SEs improve interrater agreement in the localization of seizures of anterior temporal origin, and in about one fourth of patients, SEs add ictal data not identified by ATEs.

KW - Fluoroscopy

KW - Intractable epilepsy

KW - Mesial temporal sclerosis

KW - Temporal lobe epilepsy

UR - http://www.scopus.com/inward/record.url?scp=0036796128&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036796128&partnerID=8YFLogxK

U2 - 10.1046/j.1528-1157.2002.06402.x

DO - 10.1046/j.1528-1157.2002.06402.x

M3 - Article

C2 - 12366735

AN - SCOPUS:0036796128

VL - 43

SP - 1189

EP - 1196

JO - Epilepsia

JF - Epilepsia

SN - 0013-9580

IS - 10

ER -