All that glitters: Contribution of stereo-EEG in patients with lesional epilepsy
Abstract number :
422
Submission category :
3. Neurophysiology / 3A. Video EEG Epilepsy-Monitoring
Year :
2020
Submission ID :
2422766
Source :
www.aesnet.org
Presentation date :
12/6/2020 12:00:00 PM
Published date :
Nov 21, 2020, 02:24 AM
Authors :
Miguel Arevalo-Astrada, Western University; Richard McLachlan - Western University of Ontario; Ana Suller Marti - Western University; Andrew Parrent - Western University; Keith MacDougall - Western University; Seyed Mirsattari - University of Western Onta
Rationale:
To determine the contribution of stereo-EEG for localization purpose in patients with a visible lesion on MRI.
Method:
All consecutive patients between February 2013 and May 2018 who met these criteria were included. We assessed the localization of the ictal onset and its relationship with the lesion. Clinical, radiological, and electrographic analyses were performed.
Results:
Stereo-EEG revealed an ictal onset with either partial or no overlap with the lesion seen on MRI in 42 (56%) of the 75 lesions included. Mesial temporal sclerosis was the only lesion type associated with an exclusively lesional ictal onset.
Conclusion:
These findings support the idea that a lesion is only part of a more complex epileptogenic network.
Funding:
:None.
Neurophysiology