Abstract #0406
Extending the sensitivity of a transmit/receive radiofrequency coil with dielectric materials at 7 T
Manushka V. Vaidya 1 , Daniel K. Sodickson 1 , Christopher M. Collins 1 , and Riccardo Lattanzi 1
1
Bernard and Irene Schwartz Center for
Biomedical Imaging, Department of Radiology, New York
University School of Medicine, New York, NY, United
States
High-permittivity material (HPM) can be used to shape
and/or enhance the magnetic field associated with a
radiofrequency (RF) coil. We showed in simulations that
placing discs of HPM beneath and beside an RF coil can
extend its sensitivity, improving transmit efficiency
and SNR as compared to a single surface coil covering
the same field of view. The results are comparable to
the case of a surface array of three loops with the same
total dimensions. Our results suggest that HPMs could be
used to improve coil performance when the number of
transmit or receive channels is limited.
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