Abstract #4933

Intraoperative 3T MRI as navigator for laser interstitial thermal therapy in paediatric epilepsy and tumour surgery

Gilbert Hangel^1,2, Matthias Tomschik², Johannes Herta², Jonathan Wais², Fabian Winter², Gregor Kasprian³, Martha Feucht⁴, Christian Dorfer², and Karl Rössler²

¹High-field MR Center, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria, ²Department of Neurosurgery, Medical University of Vienna, Vienna, Austria, ³Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria, ⁴Center for Rare and Complex Childhood Onset Epilepsies, Member of ERN EpiCARE, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria

Synopsis

Keywords: Thermometry/Thermotherapy, Interventional Devices, MR-guided LITT

Motivation: MR-guided laser interstitial thermal therapy (LITT) uses laser fibres to ablate lesions under MR-thermometry monitoring. Distance between OR and MRI complicates this procedure, but previous generations of intraoperative MRIs were limited to fields up to 1.5T.

Goal(s): We investigated a dual-room setup for intraoperative 3T MRI as navigation/monitoring for LITT.

Approach: In eleven paediatric patients, we demonstrated this setup as navigation/monitoring for LITT.

Results: We quantified achievable time and precision parameters, e.g., a mean total surgery time of 4.9 hours.

Impact: Minimised surgery time and complications as well as improved treatment monitoring for laser interstitial thermal therapy make dual-room intraoperative 3T MRIs beneficial for paediatric patients.

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