波谱学杂志2025，Vol.42Issue(3)：285-298,14.DOI:10.11938/cjmr20243137
便携式磁共振多源射频脉冲发生器设计
Design of a Portable Magnetic Resonance Multi-source RF Pulse Generator
摘要
Abstract
In the field of magnetic resonance imaging(MRI),multi-source emission can improve the uniformity of radio frequency(RF)magnetic field and the quality of MRI images.In this paper,we propose a portable MRI multi-source RF pulse generator design based on the Zynq 7000 SoC all programmable system-on-chip.The design consists of a host computer software with fully open pulse sequence parameters and a fully digitalized,highly integrated,dual credit card-sized hardware board,which outputs multiple RF pulse signals with independently adjustable waveform,frequency,phase,and amplitude in parallel.The hardware description language Verilog is used to build AXI DDS(advanced eXtensible interface direct digital synthesizer)and multiplier circuits inside the FPGA(field programmable gate array)to realize the functions of generating multiple RF pulse signals and signal modulation.The experimental results show that the design can correctly transmit four MRI RF pulse signals,providing a fully digital,reconfigurable,compact,and feasible solution for developing a portable magnetic resonance multi-source RF pulse generator.关键词
磁共振/多源射频脉冲发生器/可重构性/小型化Key words
magnetic resonance/multi-source RF pulse generator/reconfigurability/miniaturization分类
数理科学引用本文复制引用
刘颖,袁斌华,章浩伟..便携式磁共振多源射频脉冲发生器设计[J].波谱学杂志,2025,42(3):285-298,14.基金项目
国家自然科学基金资助项目(61101174) （61101174）
上海介入医疗器械工程技术研究中心资助项目(18DZ2250900). （18DZ2250900）
