Abstract #3738

Design of a high power RF amplifier with configurable number of channels

Jifeng Chen^1,2, Ye Li^1,2, Zhenhua Shen³, Bin Liu³, Xiaoliang Zhang⁴, Bin Cao³, Xin Liu^1,2, Xu Chu³, and Hairong Zhen^1,2

¹Paul C. Lauterbur Imaging Research Center, Shenzhen Institutes of Advanced Technology, Shenzhen, China, ²Key Laboratory for Magnetic Resonance and Multimodality Imaging of Guangdong Province, Shenzhen, China, ³Shanghai United Imaging Healthcare, Shanghai, China, ⁴Department of Biomedical Engineering, State University of New York at Buffalo, New York, NY, United States

Synopsis

Keywords: RF Arrays & Systems, Parallel Transmit & Multiband, RF power amplifierUHF (Ultra high field) MRI requires high RF power from RF Power Amplifier (RFPA), especially for whole-body imaging¹. Some studies on body imaging reported limitation on available RF power. In this study, we present works to provide RFPA with highest peak power capability known for UHF MRI with configurable number of transmit channels so as to meet different RF coil requirements. Feasibility and performance of the new method in UHF MRI was demonstrated on the bench and 5T whole-body scanner.

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