基于异构双核的磁共振接收机的设计
发布时间：2018-12-15 07:12
【摘要】：提出了基于异构双核的低场核磁共振(Low-field Nuclear Magnetic Resonance,low-field NMR)接收机的设计,具有ARM(Adanced RISC Machines)和现场可编程门阵列(Field Programmable Gate Array,FPGA)先进的异构双核结构、高速的模数转换器(Analog to Digital Converter,ADC)采集、增益的可控以及可视化显示等特性,提高了整个系统的性能指标.设计中采用Xilinx公司的系统开发工具System Generator来实现内部信号处理功能.实验结果表明,数字接收机具有结构紧凑、可重构性强、采样速率高和成本低等特点,并且增益的可控使接收机获得了较大的动态范围,提高了重建图像的信噪比(Signal-to-Noise Ratio,SNR).
[Abstract]:The design of low field nuclear magnetic resonance (Low-field Nuclear Magnetic Resonance,low-field NMR) receiver based on heterogeneous binuclear is presented. The receiver has advanced heterogeneous dual-core structure with ARM (Adanced RISC Machines) and (Field Programmable Gate Array,FPGA (Field Programmable Gate Array). High speed A / D converter (Analog to Digital Converter,ADC) acquisition, gain control and visual display can improve the performance of the whole system. In the design, the system development tool System Generator of Xilinx Company is used to realize the internal signal processing function. The experimental results show that the digital receiver has the advantages of compact structure, strong reconfiguration, high sampling rate and low cost. The signal-to-noise ratio (Signal-to-Noise Ratio,SNR) of reconstructed image is improved.
【作者单位】： 上海理工大学医疗器械与食品学院医学影像工程研究所;
【基金】：国家自然科学基金资助项目(61101174) 微创创新基金资助项目(YS30808115)
【分类号】：O482.531
[Abstract]:The design of low field nuclear magnetic resonance (Low-field Nuclear Magnetic Resonance,low-field NMR) receiver based on heterogeneous binuclear is presented. The receiver has advanced heterogeneous dual-core structure with ARM (Adanced RISC Machines) and (Field Programmable Gate Array,FPGA (Field Programmable Gate Array). High speed A / D converter (Analog to Digital Converter,ADC) acquisition, gain control and visual display can improve the performance of the whole system. In the design, the system development tool System Generator of Xilinx Company is used to realize the internal signal processing function. The experimental results show that the digital receiver has the advantages of compact structure, strong reconfiguration, high sampling rate and low cost. The signal-to-noise ratio (Signal-to-Noise Ratio,SNR) of reconstructed image is improved.
【作者单位】： 上海理工大学医疗器械与食品学院医学影像工程研究所;
【基金】：国家自然科学基金资助项目(61101174) 微创创新基金资助项目(YS30808115)
【分类号】：O482.531
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