A compact dielectric resonator antenna array was developed for cardiovascular MRI at 7.0T MRI. The antenna building block is based on the concept of a self-grounded bow-tie (SGBT) antenna placed inside a resonator cavity filled with deuterium oxide. This approach ensures light-weight design and affords high-density RF arrays, which constitutes a major advantage over current state-of-the-art electric dipole configurations. The proposed high-density SGBT transceiver array provides ample parallel imaging and real time imaging capabilities. It contributes to the technological basis for the future clinical assessment of parallel transmit techniques designed for ultrahigh field cardiac MR.
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