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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