Abstract #2139

Transceive surface array of dipole antennas for multi-transmit imaging at 3T

Aidin Ali Haghnejad¹, Shaihan J. Malik², Francesco Padormo², Cornelis A.T. van den Berg¹, Peter R. Luijten¹, Dennis W.J. Klomp¹, Joseph V. Hajnal ², and Alexander J.E. Raaijmakers¹

¹UMC Utrecht, Utrecht, Netherlands, ²King's College London, London, United Kingdom

The birdcage body coil at 3T has some considerable disadvantages. Most of all it has very large power requirements. The use of local transmit arrays severely reduces these power requirements. In this study, we intend to explore the use of dipole antennas as transceive surface array elements at 3T. Three designs are investigated after which a strongly meandering dipole antenna is selected. An array of eight of these element is used for prostate imaging at 3T in a 8ch. multi-transmit MRI system. Using 8x200W input power, 12 µT is achieved inside the prostate. Relatively homogeneous T2w images have been acquired

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