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Abstract #0541

The Electric Dipole Array: An Attempt to Match the Ideal Current Pattern for Central SNR at 7 Tesla

Graham Charles Wiggins1, Bei Zhang1, Riccardo Lattanzi1, Gang Chen2, Daniel Sodickson1

1The Bernard and Irene Schwartz Center for Biomedical Imaging, NYU Medical Center, New York, NY, United States; 2The Sackler Institute of Graduate Biomedical Science, NYU School of Medicine, New York, NY, United States

Analysis of the Ultimate Intrinsic SNR (UISNR) makes it possible to plot the current pattern on a given surface which corresponds to the UISNR for a given position within the phantom. For cylindrical geometries and optimizing for the center of the phantom, the current patterns can appear like distributed electric dipoles at high field, with current flowing in straight lines along the length of the cylinder with no return path. To mimic this pattern an array of 8 dipole antennas has been constructed for 7T and compared to conventional coil designs.