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Abstract #0430

Toward Human Head Imaging at 10.5T Using an Eight-Channel Transmit/Receive Array of Bumped Fractionated Dipoles

Alireza Sadeghi-Tarakameh1,2, Angel Torrado-Carvajal3, Russell L. Lagore4, Sean Moen4, Xiaoping Wu4, Gregor Adriany4, Gregory J. Metzger4, Lance DelaBarre4, Kamil Ugurbil4, Ergin Atalar1,2, and Yigitcan Eryaman4

1Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey, 2National Magnetic Resonance Research Center (UMRAM), Ankara, Turkey, 3Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, United States, 4Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States

Ultra-high field (UHF)-magnetic resonance imaging (MRI) provides numerous benefits such as significant increase in signal-to-noise ratio (SNR), however, increasing the field strength, the local specific absorption rate (SAR) starts to become a limiting factor. Utilizing a TxArray coil with improved SAR performance may provide a good solution for this issue. In this study, we designed and built an eight-channel transmit/receive array of bumped fractionated dipoles for head imaging at 10.5T. We established a good agreement between simulations and experiments in order for RF safety validations. In addition, a cadaver head was imaged using pTx pulses to evaluate the imaging performance.

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