Abstract #0859
Discovering and working around effects of unwanted resonant modes in high permittivity materials placed near RF coils
Gillian G Haemer 1,2 , Christopher M Collins 1,2 , Daniel K Sodickson 1,2 , and Graham C Wiggins 1
1
The Center for Advanced Imaging Innovation
and Research, and the Center for Biomedical Imaging,
Department of Radiology, New York University School of
Medicine, New York, NY, United States,
2
The
Sackler Institute of Graduate Biomedical Sciences,
Department of Radiology, New York University School of
Medicine, New York, NY, United States
Previous work has shown that high permittivity materials
(HPMs) placed between the coil and the sample can
improve SNR, transmit efficiency, and RF homogeneity.
However dielectric resonances in any HPM placed close to
a transmit/receive coil may create an adverse affect
when tuning and matching RF coils. By visualizing the
dielectric resonant modes and testing various ways to
reduce their effect on the coil we explore one practical
aspect of HPM use.
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