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Abstract #0363

Safe-MRI with stereo-electroencephalography (sEEG) for epilepsy patients

Flora Guarnotta1, Jeremie Clement1, Rachel Sparks1, and Özlem Ipek1
1School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom

Epileptic seizure investigations with sEEG electrodes are limited to regions sampled and this may exclude relevant seizure network areas. Simultaneous EEG/fMRI may better elucidate the relationship whole-brain interactions and sEEG connectivity. However, excessive radiofrequency(RF) heating of implanted electrodes is showstopper. We investigated the role of parallel-transmit(pTx) RF coil arrays at 3 Tesla to control the RF-heating and local signal increases near the electrodes using computational field simulations. The pTx coils more specifically the 16ch was more efficient than the birdcage in terms of controlling the RF-field steering in the brain, which indicated less RF-heating near the contacts of the electrodes.

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