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Abstract #4406

Effect of Shielding on Surface Coil Loops at 7T

Gillian Haemer1, Graham Wiggins1

1The Bernard and Irene Schwartz Center for Biomedical Imaging, NYU Medical Center, New York, NY, United States

Radiation power loss, or the radiated power of a coil that is not absorbed into the sample, is assumed to be a problem at high field in MRI, as it is known to increase with the frequency (ω) and coil-bounding area (A): RLOSS α A2 * ω4 [1,2]. Various authors suggest that the effects of radiation loss, such as decreased SNR and coil Q, can be mitigated by adding RF shielding to coils used at high field.