title: Effect of insulating layer material on RF-induced heating for external fixation system in 1.5 T MRI system.
abstract: The radio frequency (RF)-induced heating is a major concern when patients with medical devices are placed inside a magnetic resonance imaging (MRI) system. In this article, numerical studies are applied to investigate the potentials of using insulated materials to reduce the RF heating for external fixation devices. It is found that by changing the dielectric constant of the insulation material, the RF-induced heating at the tips of devices can be altered. This study indicates a potential technique of developing external fixation device with low MRI RF heating.
authors.affiliation: Department of Electrical and Computer Engineering, University of Houston, Houston , TX , USA .
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Kainz
authors.forename: Songsong
authors.initials: S
authors.lastname: Qian
authors.forename: Wen
authors.initials: W
authors.lastname: Wu
authors.forename: Ji
authors.initials: J
authors.lastname: Chen
mesh_terms: D006358:Hot Temperature; D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D008962:Models, Theoretical; D011846:Radio Waves / Q000009:adverse effects*; D012984:Software; D013814:Thermal Conductivity
keywords: MRI; Medical device; RF heating