title: Multislice radio-frequency current density imaging.
abstract: Radio-frequency current density imaging (RF-CDI) is an imaging technique that noninvasively measures current density distribution at the Larmor frequency utilizing magnetic resonance imaging (MRI). Previously implemented RF-CDI techniques were only able to image a single slice transverse to the static magnetic field B(0) . This paper describes the first realization of a multislice RF-CDI sequence on a 1.5 T clinical imager. Multislice RF current density images have been reconstructed for two phantoms. The influence of MRI random noise on the sensitivity of the multislice RF-CDI measurement has also been studied by theoretical analysis, simulation and phantom experiments.
authors.affiliation: Department of Electrical and Computer Engineeringand Institute of Biomaterial and Biomedical Engineering, University of Toronto,Toronto, ON, M5S 3G9 Canada. dinghui.wang@utoronto.ca
authors.forename: Dinghui
authors.initials: D
authors.lastname: Wang
authors.forename: Tim P
authors.initials: TP
authors.lastname: DeMonte
authors.forename: Weijing
authors.initials: W
authors.lastname: Ma
authors.forename: Michael L G
authors.initials: ML
authors.lastname: Joy
authors.forename: Adrian I
authors.initials: AI
authors.lastname: Nachman
mesh_terms: D000465:Algorithms; D000818:Animals; D003198:Computer Simulation; D003720:Densitometry / Q000379:methods*; D006321:Heart / Q000502:physiology; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D019047:Phantoms, Imaging; D011846:Radio Waves; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013552:Swine