Multislice radio-frequency current density imaging.
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.
Wang
Dinghui
D
Department of Electrical and Computer Engineeringand Institute of Biomaterial and Biomedical Engineering, University of Toronto,Toronto, ON, M5S 3G9 Canada. dinghui.wang@utoronto.ca
DeMonte
Tim P
TP
Ma
Weijing
W
Joy
Michael L G
ML
Nachman
Adrian I
AI
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