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Abstract #0414

Implant-Friendly Excitation Strategies for Imaging DBS Electrodes at 7T

Alireza Sadeghi-Tarakameh1, Lance DelaBarre1, Nur Izzati Huda Zulkarnain1, Noam Harel1, and Yigitcan Eryaman1
1Center for Magnetic Resonance Research (CMRR), University of Minnesota, Minneapolis, MN, United States

We mitigated the radiofrequency heating at the contacts of a DBS electrode by utilizing an implant-friendly (IF) excitation scenario at 7T. IF modes of a 16-channel transmit/receive coil are calculated by minimizing electrode-shaft current close to the contacts. An IF excitation is calculated by shimming the B1+ field in an ROI using individual IF modes of the array. The proposed approach is able to mitigate the shaft current and RF heating at the contacts.

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