Title :
Scattering of the MRI field at 1.5T by a Vagus Nerve Stimulation implant
Author :
Mohsin, Syed A. ; Saeed, Usman ; Nyenhuis, John ; Sheikh, Noor M.
Author_Institution :
Purdue Univ., West Lafayette, IN
Abstract :
We have investigated the scattering of the magnetic resonance imaging (MRI) RF electromagnetic field by implants for vagus nerve stimulation (VNS) therapy using the finite element method to perform full 3-D realistic simulations. For an implanted VNS lead, we calculated the RF scattered field and the heat equation was solved using an FEM tool to find the temperature rise. Current distributions in the twin-strand lead, specific absorption rate (SAR) and temperature rise distributions are presented.
Keywords :
biomedical MRI; electromagnetic wave scattering; finite element analysis; prosthetics; FEM tool; MRI field scattering; RF electromagnetic fields; current distributions; heat equation; magnetic resonance imaging; radiofrequency scattering; specific absorption rate; temperature rise distributions; vagus nerve stimulation implants; Current distribution; Electromagnetic fields; Electromagnetic scattering; Equations; Finite element methods; Implants; Magnetic resonance imaging; Medical treatment; Radio frequency; Temperature;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619677
