title: A MOM/FEM-based coil sensitivity mapping method for high-field parallel MRI.
abstract: In this study, an electromagnetics-based inverse sensitivity mapping method is introduced for applications in high field MRI. Instead of using simplistic numerical approximations, the sensitivity of the radio-frequency coil was determined through a field approach by using iterative optimization. The current study is an extension to previous studies on the inverse method, which has restricted itself to low-field applications due to the use of the Biot-Savart integration to account for the H field calculations. In the current study, full-wave solutions to the Maxwell's equations based MOM/FEM hybrid algorithm were employed to provide H field evaluation. It is demonstrated that the proposed method is able to produce high-fidelity sensitivity estimation which result in images with significantly less artefact power.
authors.affiliation: School of Information Technology and Electrical Engineering, the University of Queensland, Brisbane, Queensland 4072, Australia. jinjin@itee.uq.edu.au
authors.forename: Jin
authors.initials: J
authors.lastname: Jin
authors.forename: Feng
authors.initials: F
authors.lastname: Liu
authors.forename: Yu
authors.initials: Y
authors.lastname: Li
authors.forename: Ewald
authors.initials: E
authors.lastname: Weber
authors.forename: Wenlong
authors.initials: W
authors.lastname: Xu
authors.forename: Stuart
authors.initials: S
authors.lastname: Crozier
mesh_terms: D008279:Magnetic Resonance Imaging / Q000295:instrumentation*; D011846:Radio Waves