Devashish Shrivastava1, Timothy Hanson, Aviva Abosch, J. Thomas Vaughan
1CMRR, Radiology, University of Minnesota, Minneapolis, MN, USA
Deep brain stimulation electrode (3389, Medtronic Inc., Minneapolis, MN) did not cause any statistically significant heating at 9.4 T (400.2 MHz) in ex vivo, non-perfused porcine heads. RF heating was measured in the head-skin, brain, and air next to the head using fluoroptic probes with and without the electrode. A continuous wave RF power was delivered to the head using a tuned and matched, four loop, transmit and receive volume head coil for 1.5 hours. The whole head average SAR was close to 3 W/kg.