A large volume HEM dielectric resonator for musculoskeletal applications at ultra high field

A water-based dielectric resonator operating in the quadrature HEM mode has been designed and constructed for imaging the human knee at 7 Tesla. The continuous current distribution throughout the resonator results in an extremely simple design of a water-filled annulus connected to the scanner through two impedance matching networks. High resolution images of the knee at sub-millimeter resolution have been acquired in less than 4 minutes using this resonator.

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