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The electric properties (EPs) of biological tissue, i.e., the electric conductivity and permittivity, can provide important information in the diagnosis of various diseases. The EPs also play an important role in specific absorption rate calculation, a major concern in high-field MRI, as well as in nonmedical areas such as wireless telecommunications. The high-field MRI system is accompanied by significant...
Functional imaging has played a significant role in bettering our understanding of mechanisms of brain function and dysfunctions. We review recent research on electrophysiological neuroimaging, multimodal neuroimaging integrating functional MRI with EEG, and our development of magnetoacoustic tomography with magnetic induction for high resolution impedance imaging. Examples from research of our group...
We have developed a new magnetic resonance electrical impedance tomography (MREIT) algorithm, RSM-MREIT. This new algorithm uses response surface methodology (RSM) and Simplex method to reconstruct subject's conductivity distribution. RSM-MREIT algorithm uses only one component of the measured magnetic flux density to reconstruct the conductivity images, and, consequently, solves the rotation problem...
We propose a novel magnetic resonance electrical impedance tomography (MREIT) algorithm, RBF-MREIT algorithm and apply it to reconstruct the conductivity distribution of human head. Computer simulations are conducted on a three-sphere head model to test the feasibility of the proposed algorithm. The simulation results demonstrate that the RBF-MREIT algorithm can estimate the conductivity values within...
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