Abstract #3174
Preliminary investigation on shielding-ring based decoupling technique for small monolithic RF coils
Zhoujian Li 1 , Roberta Kriegl 2,3 , Elmar Laistler 2,3 , Marie Poirier-Quinot 1 , Luc Darrasse 1 , and Jean-Christophe Ginefri 1
1
Laboratoire dImagerie par Rsonance
Magntique Mdicale et Multi-Modalits (IR4M), UMR8081
CNRS, Universit Paris-Sud, Orsay, France,
2
Center
for Medical Physics and Biomedical Engineering, Medical
University of Vienna, Vienna, Austria,
3
MR
Centre of Excellence, Medical University of Vienna,
Vienna, Austria
A shielding ring based decoupling technique was
investigated for small monolithic HTS coils, an
analytical model based on magnetic flux compensation to
determine the geometric configuration of two neighbor
shielding rings to achieve optimal decoupling was
developed and validated experimentally using a two-MTLR
copper array, and the effect of the shielding rings on
the overall coil losses was evaluated using a standard
2-coil array cooled at LN2 temperature. Results show
that configuration achieving near-optimal decoupling can
be obtained using this model, and high Q-factor value by
employing HTS material can be expected by exploiting
this technique.
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