368-04-006 ISMRM Abstract

Coil-Integrated Digital RF Amplifier on a 9 cm² Footprint for MRI Scanners

Primary: Physics & Engineering - RF Arrays & Systems

Secondary: Physics & Engineering - New Devices

368-04-006 · Novel MRI Hardware · Monday, 11 May, 2:45 PM–3:40 PM · Digital Posters Row I

Keywords: Transmit arrays Transmit efficiency RF power amplifier Class E On coil amplifier

Accepted

Abdullah Erkam Arslan^1,2, Ege Aydın^1,2, Ergin Atalar ^1,2

¹Department of Electrical and Electronics Engineering, Bilkent University, Ankara, Turkey

²National Magnetic Resonance Research Center (UMRAM), Bilkent University, Ankara, Turkey

Presenting Author: Ergin Atalar

Synopsis

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References

1. 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):3494-501, PubMed: 32662913, doi:10.1002/mrm.28392 [doi] [pmid]

2. Gudino N, Heilman JA, Riffe MJ, Heid O, Vester M, Griswold MA. On-coil multiple channel transmit system based on class-D amplification and pre-amplification with current amplitude feedback. Magn Reson Med. 2013;70(1):276-89, PubMed: 22890962, doi:10.1002/mrm.24462 [doi] [pmid]

3. Twieg M, Griswold MA. High efficiency radiofrequency power amplifier module for parallel transmit arrays at 3 Tesla. Magn Reson Med. 2017;78(4):1589-98, PubMed: 27797109, doi:10.1002/mrm.26510 [doi] [pmid]

4. Arslan AE and Atalar E, "Low-cost high-efficiency on-coil class-E amplifier transmit array with dynamic digital phase control for 3T MRI," in ESMRMB, Barcelona, Spain, 2024, pp. 641-644, doi:10.1007/s10334-024-01191-6 [doi]

5. Poni R. A digitally controlled class-E amplifier for MRI [MS (Master of Science)]: Bilkent University; 2016.

6. Arslan AE. A 600W on-coil Class-E RF power amplifier array with dynamic phase control for 3T MRI [MS (Master of Science)]: Bilkent University; 2022.

7. Ishimori Y, Shimanuki T, Kobayashi T, Monma M. Fast B1 Mapping Based on Double-Angle Method with T1 Correction Using Standard Pulse Sequence. J Med Phys. 2022;47(1):93-8, PubMed: 35548043, doi:10.4103/jmp.jmp_78_21 [doi] [pmid]

8. Jeon S, Suárez A, Rutledge DB. Analysis and elimination of hysteresis and noisy precursors in power amplifiers. IEEE transactions on microwave theory and techniques. 2006;54(3):1096-106, doi:10.1109/TMTT.2005.864125 [doi]

Cite this abstract

http://echo.ismrm.org/p/ISMRM2026/368-04-006