Abstract #0854
Multi-Turn Multi-Gap Transmission Line Resonators - First Tests at 7 T
Roberta Kriegl 1,2 , Jean-Christophe Ginefri 2 , Marie Poirier-Quinot 2 , Zhoujian Li 2 , Luc Darrasse 2 , Ewald Moser 1,3 , and Elmar Laistler 1,3
1
Center for Medical Physics and Biomedical
Engineering, Medical University, Vienna, Vienna,
Austria,
2
IR4M
(Imagerie par Rsonance Magntique Mdicale et Multi-Modalits),
UMR8081 CNRS, Universit Paris Sud, Orsay, Essonne,
France,
3
MR
Centre of Excellence, Medical University, Vienna,
Vienna, Austria
A novel design scheme for monolithic transmission line
resonators (TLRs) used as NMR surface probes is
presented. The multi-turn multi-gap TLR design provides
an additional degree of freedom for adjusting the TLR
geometry, and therefore enables more accurate
optimization of current distribution, and B
1
pattern.
It also promotes the use of multi-turn TLR technology
for high-field applications requiring a large FOV, which
has not been possible up to now due to the low
self-resonance frequency of these coils. Here, we
compare three different multi-turn multi-gap TLRs
designed for
1
H
imaging at 7 T by 3D electromagnetic simulations and MRI
experiments.
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