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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