WP4

Objectives: WP4 is intended to develop novel resonant metasurfaces for efficient redistribution of RF fields in the MRI-bore, which are expected to greatly improve imaging capabilities of high-field and ultra-high-field RF coils and arrays. Metasurfaces appear to be a qualitatively new approach to design MRI coils and antennas with the advantage of control over near field distribution. The proposed work package on metasurfaces as artificial boundaries for MRI bore involves the theoretical and experimental study and optimization of metasurfaces for the electromagnetic conditions of MRI and the design of experimental metasurface-based RF coils with advanced imaging performance for 1.5 to 17 Tesla scanners. The work package will include the following topics: (1) electromagnetic bandgap surfaces for novel body array coils with unprecedented number of dipole elements at 7 Tesla; (2) metasurface-based resonant tabs for improvement of signal-to-noise ratio at 1.5-3 Tesla; (3) novel metasurface-based antennas for small-animal imaging at 7-17 Tesla; (4) design of metasurface-covered magnetic RF-shield.