In this work we introduce a new type of antenna for ultrahigh field MRI which combines the advantages of dielectric resonator and dipole antennas: dipolectric antenna. Numerical simulations were performed to benchmark our concept against a loop-dipole antenna, and significant transmit efficiency gains in the peripheral as well as deeper located regions were observed. An 8-channel dipolectric antenna array was developed, and evaluated at the bench as well as in phantom experiments. In vivo MRI/MRS experiments at 7T were conducted and it was demonstrated that dipolectric antennas can be a promising approach for ultrahigh field MRI.
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