Meeting Banner
Abstract #4422

Functional MRI Using Implanted Stereotactic EEG Electrodes --- Heating Investigation for Safety

Pallab K. Bhattacharyya1, Jorge A. Gonzalez-Martinez2, Mark J. Lowe1, Dileep Nair1, Richard Prayson1, Myron Zhang1, Stephen E. Jones1

1Cleveland Clinic, Cleveland, OH, United States; 2Cleveland Clinic Foundation, Cleveland, OH, United States

As a safety measure of performing MRI with implanted stereotactic EEG (SEEG) electrodes, we investigated the effect on electrode heating by the geometry and configuration of the electrodes and associated connections by measuring radio frequency induced heating of a SEEG electrode embedded within a phantom inside an intraoperative MRI suite, with the electrode directly connected to stimulus hardware located in the control room. Once the safety of the procedure was ensured, fMRI scans were performed on human subjects with implanted SEEG electrodes as well. No damage to brain slice was confirmed by pathology.

Abstract PDF Presentation Video

Keywords

able acquisition activity addition ahead allowed another apply array audience away axis baker body bore brain cable central clinic close coil coming computed configuration configurations connected connection connections constant contact contacts control corresponded cure decreases depends directly distal electrode electrodes elevated ensured entered epilepsy epileptic evaluated ever excessive expected exposure farthest feasibility finding floor focal foundations frequency functional generating geometry greatest hardware head heat heating highest human identification implanted included induced inserted inside integrated interactively intractable investigation known laid lobe located long lying mark measure measured passed pathologic pathologist patient patients phantom placed placement planning positioning power print procedure produce projecting proper receive recording refractory repetitions resection rise room safety sample scanned scanning seizure setup shielded simulator simultaneous simultaneously slice split stain stimulated stimulation stimulus strategy strongly subjects successful suite supported surgical system table target tech temperature temporal torso trained trains transmit turbo unit usage usually varied waveguide ways whole zone