Abstract #0404
High-permittivity Materials can Improve Global Performance and Safety of Close-Fitting Arrays
Christopher M. Collins 1 , Giuseppe Carluccio 1 , Manushka V. Vaidya 1 , Gillian G. Haemer 1 , Wei Luo 2 , Riccardo Lattanzi 1 , Graham C. Wiggins 1 , Daniel K. Sodickson 1 , and Qing X. Yang 3
1
Bernard and Irene Schwartz Center for
Biomedical Imaging, Department of Radiology, New York
University School of Medicine, New York, NY, United
States,
2
Bioengineering,
The Pennsylvania State University, PA, United States,
3
Radiology,
The Pennsylvania State University, PA, United States
While most work with high permittivity materials (HPMs)
in MRI has been focused on improving SNR or transmit
efficiency for a relatively small region within a much
larger coil or array, our recent work demonstrates that
HPMs can also improve performance of small coils very
near the subject, as well as arrays of such coils for
the entire region of the anatomy they encompass. Here we
introduce theoretical arguments for how this can occur
before presenting numerical demonstrations that HPMs
will, indeed, increase SNR and reduce SAR within the
entire cerebrum for a specific close-fitting
head-specific HPM/array combination at 7T.
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