We present a new approach replacing high-permittivity water-based dielectric pads with a non-resonant low-cost artificial dielectric to improve MR image quality by modifying the interferences present in the radiofrequency field at 7T MRI. The artificial dielectric comprises a stack of metal patches printed on dielectric substrates. Numerical studies and imaging of a head-phantom with the proposed structure showed the same increase in the transmit radiofrequency field distribution at the area of interest as for conventional dielectric pads. The advantages of the new structure include ease of manufacture and long-term stability.
This abstract and the presentation materials are available to members only; a login is required.