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Abstract #4806

A flexible transceiver array of monolithic transmission line resonators

Roberta Kriegl 1,2 , Jean-Christophe Ginefri 1 , Marie Poirier-Quinot 1 , Luc Darrasse 1 , Ewald Moser 2,3 , and Elmar Laistler 2,3

1 Laboratoire d'Imagerie par Rsonance Magntique Mdicale et Multi-Modalits (IR4M), Universit Paris Sud, Orsay, Essonne, France, 2 Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Vienna, Austria, 3 MR Center of Excellence, Medical University of Vienna, Vienna, Vienna, Austria

A novel transceiver array composed of monolithic transmission line resonators, fabricated on flexible substrate, for MRI at 7 T is presented. Individual array elements are mutually decoupled via overlapping annexes; inductive matching and fine-tuning using pick-up loops in over-coupled mode was implemented. The decoupling and parallel imaging performance of the array was assessed in bench and MRI experiments in terms of transmission S-parameters, noise correlation values and GRAPPA g-factors, comparing planar and bent array configuration. It is shown that the developed array may be form-fitted to non-planar samples without degrading its performance.

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