Meeting Banner
Abstract #4868

SAR reduction in deep brain stimulation patients using parallel transmission

Bastien Guerin 1 , Sara Sprinkhuizen 1 , Cristen LaPierre 1,2 , Yigitcan Eryaman 1,3 , and Lawrence L Wald 1,4

1 A. A. Martinos Center for Biomedical Imaging, Dpt. of Radiology, Massachusetts General Hospital, Charlestown, MA, United States, 2 Dpt. of Physics, Harvard Univerity, Cambridge, MA, United States, 3 Madrid-MIT M+Vision Consortium in RLE, Massachusetts Institute of Technology, Cambridge, MA, United States, 4 Division of Health Sciences Technology, Harvard-MIT, Cambridge, MA, United States

Deep brain stimulation (DBS) is used to treat Parkinson disease, essential tremor and depression. DBS involves implanting electrodes permanently in the patients brain. When placed inside an MRI scanner the DBS lead heats up because of strong coupling with the RF field, which is dangerous to the patient. We show in simulations and phantom experiments that parallel transmission can excite the MRI signal without creating significant SAR at the tip of the DBS lead by minimizing the electric field along the DBS lead wire. Application of this approach in vivo could elucidate the mechanisms of action of DBS.

This abstract and the presentation materials are available to members only; a login is required.

Join Here