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Abstract #5165

Simultaneous Estimation of Electrical Properties and Incident Fields Using Global Maxwell Tomography with B1+ and MR Signal Data

Jose E. C. Serralles1, Ilias I. Giannakopoulos2, Georgy D. Guryev1, Luca Daniel1, and Riccardo Lattanzi2
1Research Laboratory of Electronics (RLE), Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 2The Bernard and Irene Schwartz Center for Biomedical Imaging (CBI), Department of Radiology, New York University Grossman School of Medicine, New York, NY, United States

Synopsis

Keywords: Electromagnetic Tissue Properties, Electromagnetic Tissue PropertiesWe propose a novel approach to electrical property (EP) estimation that also estimates the incident fields generated by a coil, by solving a basis pursuit problem. We also propose a novel Global Maxwell Tomography (GMT) formulation that uses the MR signal instead of $$$B_1^+$$$. We tested our approach experimentally by reconstructing the average EP of a homogeneous cylinder. We obtained < 5% estimation error using only $$$B_1^+$$$ data obtained from MR Fingerprinting. We then estimated the receive sensitivity maps $$$B_1^-$$$ by using the new signal-based GMT.

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