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Abstract #2730

Heating Near Deep Brain Stimulation (DBS) Lead Electrodes During Imaging with a 3T Transceive Head Coil in Cadaveric Porcine Heads

Devashish Shrivastava1, Timothy Hanson2, Ute Goerke1, Lance DelaBarre1, Rachana Visaria3, Paul Iaizzo1, Aviva Abosch1, JT Vaughan1

1University of Minnesota, Minneapolis, MN, United States; 2University of South Carolina; 3MR Safe Devices LLC, Minneapolis, MN, United States

Heating near DBS lead electrodes was measured using fluoroptic temperature probes and simulated using a combination of a proton resonance frequency (PRF) shift based MR thermometry method and bioheat thermal modeling in cadaveric porcine heads during imaging with a 3T transceive head coil. The effect on the heating of the placement of the extra-cranial DBS lead with respect to the coil was investigated to reduce the heating. The feasibility of using the MR thermometry and thermal modeling together as a hybrid approach on predicting maximum heating near the electrodes is demonstrated as an online tool to verify patient safety.