A multimodal axial array resonator and its application in radiofrequency (RF) volume coil designs for low-field open magnetic resonance imaging (MRI)

A multimodal axial array resonator technique or coupled stack-up technique is successfully developed for the design of low field MR RF volume coils. The proposed coupled stack-up volume coil outperforms the conventional volume coils in terms of B1 efficiency, imaging coverage, and low-frequency operation capability. This design provides a robust and simple solution to the low-field MR RF coil design.