Abstract #4414

Monopole Antenna Array for UHF Magnetic Resonance Imaging

A S M Zahid Kausar¹, David Reutens¹, Ewald Weber², and Viktor Vegh¹

¹Center for Advanced Imaging, University of Quensland, Brisbane, Australia, ²School of Information Technology and Electrical Engineering, University of Queensland, Brisbane, Australia

Birdcage coils have a number of limitations, especially at ultra-high field. Monopole antenna arrays have been proposed as an alternative to birdcage coils, as the design is simpler and they do not use capacitors. We evaluated the potential of using monopole arrays for 3T and 7T MRI brain scans. To be able to benchmark performance, we compared the field produced by the monopole array with the field produced by the birdcage coil. We show that monopole arrays can potentially achieve better field homogeneity and sensitivity than the birdcage coil. We fabricated a monopole array and demonstrated decoupling between individual monopoles.

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