Cape Town - 2026 ISMRM-ISMRT Annual Meeting and Exhibition
9 May 2026 – 14 May 2026 · Cape Town, South Africa
669-03-002 ISMRM Abstract

A High Consistency Transient Optimized 8-Channel RFPA System with Band-Selective Oscillation Suppression for 5T MRI

Primary: Physics & Engineering - Parallel Transmit & Multiband
Secondary: Physics & Engineering - RF Arrays & Systems
669-03-002 · RF Arrays and Systems · Thursday, 14 May, 1:40 PM–2:35 PM · Digital Posters Row J
Keywords: Ultra-high field Consistency RF power amplifier Low-frequency oscillations Linearity
Accepted
Shang Gao 1,2,3, Jifeng Chen1,3, Xinwei Rong1,3, Xing Yang1,3,4, Nan Li1,3, Feng Du1,3, Shahzeb Hayat1,3, Peiyu He1,3, Xiaoliang Zhang5, Qiaoyan Chen1,3, Ye Li1,3,6
1Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
2Southern University of Science and Technology, Shenzhen, China
3Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen, China
4National Innovation Center for Advanced Medical Devices, shenzhen, China
5Department of Biomedical Engineering, State University of New York at Buffalo, Buffalo, United States of America
6State Key Laboratory of Biomedical Imaging Science and System, Shenzhen, China
Presenting Author: Shang Gao

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References

1. Zanchi MG, Stang P, Kerr A, Pauly JM, Scott GC. Frequency-offset Cartesian feedback for MRI power amplifier linearization. IEEE Trans Med Imaging. 2011 Feb;30(2):512-22. doi: 10.1109/TMI.2010.2087768. Epub 2010 Oct 18. PMID: 20959264; PMCID: PMC3155726. [doi] [pmid]
2. Martin, A., Schiavi, E., Eryaman, Y., Herraiz, J.L., Gagoski, B., Adalsteinsson, E., Wald, L.L. and Guerin, B. (2016), Parallel transmission pulse design with explicit control for the specific absorption rate in the presence of radiofrequency errors. Magn. Reson. Med., 75: 2493-2504. https://doi.org/10.1002/mrm.25820 [doi]
3. J. Chen et al., "High-Power Radio Frequency Amplifier for 5-T MRI Whole-Body Scanner," in IEEE Transactions on Instrumentation and Measurement, vol. 74, pp. 1-11, 2025, Art no. 2011211, doi: 10.1109/TIM.2025.3575994. [doi]
4. Vimal, V., Thakur, P., Gupta, S. et al. RF-power amplifier modelling using inverse system identification. Discov Computing 28, 21 (2025). https://doi.org/10.1007/s10791-025-09522-4 [doi]
5. Weiger M, Pruessmann KP, Hennel F. MRI with zero echo time: hard versus sweep pulse excitation. Magn Reson Med. 2011 Aug;66(2):379-89. doi: 10.1002/mrm.22799. Epub 2011 Mar 4. PMID: 21381099. [doi] [pmid]
6. Auerbach EJ, Xu J, Yacoub E, Moeller S, Uğurbil K. Multiband accelerated spin-echo echo planar imaging with reduced peak RF power using time-shifted RF pulses. Magn Reson Med. 2013 May;69(5):1261-7. doi: 10.1002/mrm.24719. Epub 2013 Mar 6. PMID: 23468087; PMCID: PMC3769699. [doi] [pmid]
7. Chen, Jifeng, et al. "High linearity non-magnetic RF power amplifier for 5T MRI." Proc. Int. Soc. Mag. Reson. Med. Vol. 32. 2024.
8. https://www.cpcamps.com/applications-tutorials.html

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/669-03-002