Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
368-04-001 ISMRM Abstract

Analysis of GaN FET output current inside ultra-high Magnetic Fields

Primary: Physics & Engineering - High-Field MRI
Secondary: Physics & Engineering - New Devices
368-04-001 · Novel MRI Hardware · Monday, 11 May, 2:45 PM–3:40 PM · Digital Posters Row I
Keywords: MRI Hardware Ultra-High Field (UHF) RF power amplifier
Accepted
Brett Setera1,2, Natalia Gudino2
1University of Maryland, College Park, United States of America
2MRI Engineering Team (MRIEngT), Laboratory of Functional and Molecular Imaging, NINDS, NIH, Bethesda, United States of America
Presenting Author: Stephen Dodd

Synopsis

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References

1. Gudino N, de Zwart JA, Duan Q, et al. Optically controlled on-coil amplifier with RF monitoring feedback. Magn Reson Med. 2018;79(5):2833-2841. doi:10.1002/mrm.26916 [doi]
2. Gudino N, de Zwart JA, Duyn JH. Eight-channel parallel transmit-receive system for 7 T MRI with optically controlled and monitored on-coil current-mode RF amplifiers. Magn Reson Med. 2020;84(6):3494-3501. doi:10.1002/mrm.28392 [doi]
3. Setera B, Christou A, Gudino N. Monitoring performance of a GaN HEMT switch across different magnetic field strengths for implementation of On-Coil Tx Amplifiers. In: Proc. Intl. Soc. Mag. Reson. Med. 31. 2023.
4. Lagore RL, Roberts BR, Possanzini C, Saylor C, Fallone BG, De Zanche N. A system for automated noise parameter measurements on MR preamplifiers and application to high B0 fields. NMR Biomed. 2014;27(8):926-938. doi:10.1002/nbm.3138 [doi]
5. L. Hébrard, D. V. Nguyen, D. Vogel, et al. On the influence of strong magnetic field on MOS transistors. In: 2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS). 2016:564-567. doi:10.1109/ICECS.2016.7841264 [doi]

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/368-04-001