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Abstract #3109

Ideal current patterns correspond to larger surface coils with use of high permittivity materials

Manushka V Vaidya 1,2 , Gillian G Haemer 1,2 , Giuseppe Carluccio 1 , Dmitry Novikov 1,2 , Daniel K. Sodickson 1,2 , Christopher M. Collins 1,2 , Graham C. Wiggins 1,2 , and Riccardo Lattanzi 1,2

1 Center for Advanced Imaging Innovation and Research, and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, United States, 2 Sackler Institute of Graduate Biomedical Sciences, New York University School of Medicine, New York, NY, United States

Ideal current patterns maximize the SNR for a position within the imaging sample. Our work demonstrates that in imaging a central voxel, addition of a dielectric layer surrounding a spherical sample results primarily in a phase lag in the ideal current patterns corresponding to the additional propagation time through the layer. For an off-center voxel, the ideal current pattern covers a larger area when the dielectric layer is present, indicating that larger sized coils are optimal in this case. Our results provide an understanding of electromagnetic field behavior with dielectric materials, and provide a method to predict optimal coil design.

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