A cylindrical metasurface improves B1+ homogeneity by 17.3%, transmit efficiency by 27.4%, and SAR-efficiency by 23% versus a dielectric waveguide in 7T traveling-wave MRI.
Luukkonen et al., ‘Simple and Accurate Analytical Model of Planar Grids and High -Impedance Surfaces Comprising Metal Strips or Patches’, IEEE Trans
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Cylindrical Metasurface for Efficient Traveling-wave MRI at 7 T
A cylindrical metasurface improves B1+ homogeneity by 17.3%, transmit efficiency by 27.4%, and SAR-efficiency by 23% versus a dielectric waveguide in 7T traveling-wave MRI.