Multislice Radio-Frequency Current Density Imaging

• Published in: IEEE transactions on medical imaging Vol. 28; no. 7; pp. 1083 - 1092
• Main Authors: Dinghui Wang, DeMonte, T.P., Weijing Ma, Joy, M.L.G., Nachman, A.I.
• Format: Journal Article
• Language: English
• Published: United States IEEE 01-07-2009; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Animals; Computer Simulation; Current density; Current density imaging (CDI); Current measurement; Densitometry - methods; Density measurement; Frequency measurement; Heart - physiology; Image Processing, Computer-Assisted - methods; Image reconstruction; Imaging; Imaging phantoms; Magnetic field measurement; Magnetic fields; Magnetic resonance imaging; magnetic resonance imaging (MRI); Magnetic Resonance Imaging - methods; Medical imaging; multislice radio-frequency-current density imaging (RF-CDI); Phantoms, Imaging; Radio frequencies; Radio frequency; Radio Waves; Random noise; Reproducibility of Results; Resonant frequency; Sensitivity and Specificity; Simulation; Swine
• ISSN: 0278-0062; 1558-254X
• DOI: 10.1109/TMI.2008.2012161

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.