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

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.