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Abstract #2624

Quadrature Transmit Coil for Ultra High Field MRI

Zhiyong Zhai1, Michael A. Morich1

1Philips Healthcare, Cleveland, OH, United States

At ultra high fields such as 7T, B1 field distribution is dominated by the tissue dielectric effects. A transmit coil with uniform B1 remains a challenge compared to 1.5T or 3T. Here we suggest a new type of volume transmit coil for 7T and above - a birdcage structure with discontinuous (or broken) rungs. Simulations show that such a coil structure, when tuned properly, can generate similar B1 to that of a birdcage volume coil. It provides a new and more flexible way of making volume transmit coil for ultra-high fields MRI.