• World Neurosurg · Mar 2023

    Case Reports

    Feasibility of Transcranial Motor Evoked Potentials and Electromyography during MRI guided Laser Interstitial Thermal Therapy for Glioblastoma.

    • Mayur Sharma, Victoria A Scott, Tyler Ball, Joshua R Castle, Joseph Neimat, and Brian J Williams.
    • Department of Neurosurgery, University of Louisville, Louisville, Kentucky, USA; Department of Neurosurgery, University of Minnesota, Minneapolis, Minnesota, USA. Electronic address: mayur.sharma@uoflhealth.org.
    • World Neurosurg. 2023 Mar 1; 171: 108113108-113.

    BackgroundIntraoperative neuromonitoring (IONM) is routinely used during neurosurgical procedures. Magnetic resonance imaging (MRI)-guided laser interstitial thermal therapy (LITT) is increasingly being used in patients with various brain lesions. Use of IONM (transcranial motor evoked potential [TcMEP] and electromyography [EMG]) during LITT of a brain lesion has not been described previously.MethodsIn this report, we describe a 70-year-old man who presented with motor weakness in whom imaging revealed a left thalamic lesion. Due to the difficulty in accessing the lesion and proximity to the motor tracts, patient was offered MRI-guided LITT using TcMEP and EMG.ResultsThe patient underwent satisfactory ablation of the lesion with successful recording of the TcMEP and EMG. Technical nuances related to the set-up and procedure is discussed in this report. No procedure-related complications were encountered.ConclusionsWe describe the first report of safety and feasibility of TcMEP and EMG during MRI-guided LITT for left thalamic glioblasatoma. This report paves the way for further prospective investigations regarding the utility of this technique for eloquent brain tumors.Copyright © 2023. Published by Elsevier Inc.

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