Abstract #1318
Effects of Co-Planar Element Shielding on Array Performance at 7T
Samantha By 1 , Joseph V. Rispoli 1 , Ivan Dimitrov 2,3 , Sergey Cheshkov 2,4 , Craig Malloy 2,4 , Steven M. Wright 1,5 , and Mary Preston McDougall 1,5
1
Biomedical Engineering, Texas A&M
University, College Station, TX, United States,
2
Advanced
Imaging Research Center, University of Texas
Southwestern Medical Center, Dallas, TX, United States,
3
Philips
Medical Systems, Cleveland, OH, United States,
4
Radiology,
University of Texas Southwestern Medical Center, Dallas,
TX, United States,
5
Electrical and Computer
Engineering, Texas A&M University, College Station, TX,
United States
At higher field strengths, shielding of RF coils to
mitigate radiation losses becomes increasingly
necessary. In an array configuration, however, shielding
individual elements can be complex, particularly when
the elements are overlapped for geometric decoupling.
This work presents the benefits of a co-planar shielding
configuration of the elements of an overlapped array at
7T. Compared to the unshielded array, the shielded array
provided a 39% improvement in mean SNR throughout the
entire phantom, an average decrease in mean g-factors
for all three views of 8.9%, and a lower power setting
required to produce a 90 degree tip angle.
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