High-resolution electric source imaging for presurgical evaluation of tuberous sclerosis complex patients

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Abstract

Objective: We retrospectively assessed the localizing value of patient-history-based semiology (PHS), video-based semiology (VS), long-term monitoring video electroencephalography (LTM-VEEG) and interictal high resolution electric source imaging (HR-ESI) in the presurgical workup of patients with tuberous sclerosis complex (TSC). Methods: Data from 24 consecutive TSC surgical candidates who underwent both HR-ESI and LTM-VEEG was retrospectively collected. PHS and VS were analyzed to hypothesize the symptomatogenic zone localization. LTM-VEEG and HR-ESI localization results were extracted from the diagnostic reports. Localizing value was compared between modalities, taken the resected/disconnected area of surgical patients in consideration. HR-ESI's impact on the epileptogenic zone hypothesis and surgical workup was evaluated. Results: Semiology, interictal EEG, ictal EEG and HR-ESI were localizing in 25%, 54%, 63% and 79% of patients. Inter-modality concordance ranged between 33–89%. In good surgical outcome patients, PHS, VS, interictal EEG, ictal EEG and HR-ESI showed concordance with resected area in 1/9 (11%), 0/9 (0%), 4/9 (44%), 3/9 (33%) and 6/9 patients (67%). HR-ESI positively impacts clinical management in 50% of patients. Conclusions: In presurgical evaluation of TSC patients, semiology often has limited localizing value. Presurgical work-up benefits from HR-ESI. Significance: Our findings may advice future presurgical epilepsy workup of TSC patients with the ultimate aim to improve outcome.

Original languageEnglish
Pages (from-to)126-134
Number of pages9
JournalClinical Neurophysiology
Volume133
Early online date29 Oct 2021
DOIs
Publication statusPublished - Jan 2022

Keywords

  • Accuracy
  • Bourneville
  • Clinical value
  • Electroencephalography
  • Long-term monitoring
  • Source localization

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