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Abstract #4273

Flexible transmit/receive multi-gap coaxial coils for 7 T MRI

Lena Nohava1,2, Raphaela Czerny2, Michael Obermann1,2, Jacques Felblinger3, Roberta Frass-Kriegl2, Jean-Christophe Ginefri1, and Elmar Laistler2
1IR4M (Imagerie par Résonance Magnétique et Multi-Modalités), UMR8081, Université Paris-Sud/CNRS, Université Paris-Saclay, Orsay, France, 2Division MR Physics, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria, 3Université de Lorraine, Inserm, IADI, Nancy, France

We propose flexible multi-gap transmit/receive coaxial coils for 7 T MRI with 4, 7, 10 and 15 cm loop diameters, targeting different anatomies with large inter-subject variability and the need for close-fitting coil design. On the bench and in MRI, we evaluate the coaxial coils’ robustness upon bending, compare their performance to standard copper wire coils and demonstrate a significant SNR gain when using form-fitted coaxial coils instead of flat standard coils.

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