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Abstract #2655

Towards a Flexible Transceiver Array for 7 T Cardiac MRI: Evaluation of Decoupling Ring Effects

Sajad Hosseinnezhadian1,2, Roberta Frass-Kriegl1, Sigrun Goluch1, Michael Pichler1, Jürgen Sieg1, Marie Poirier-Quinot2, Luc Darrasse2, Ewald Moser1, Jean-Christophe Ginefri2, and Elmar Laistler1

1Division MR Physics, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 2IR4M (Imagerie par Résonance Magnétique Médicale et Multi-Modalités), Univ. Paris-Sud, CNRS, Université Paris-Saclay, Orsay, France

In view of building a flexible 7T 2D coil array for cardiac MRI at 7 T, transmission line resonators (TLRs) with and without decoupling ring are investigated. Using 3D EM simulation and MR measurements for single elements, it could be shown that the presence of the decoupling ring does not perturb significantly the $$$B_1^+/\sqrt{P_{input}}$$$ distribution of the TLR. 3D gradient echo images for both TLRs with and without decoupling rings have been acquired. No significant degradation in the image quality due to the presence of the decoupling ring was observed.

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