A Heterogeneous Dual-Core Receiver System for Magnetic Resonance Applications

doi:10.11938/cjmr20170112

Abstract

Abstract: A heterogeneous dual-core receiver system that combines advanced reduced instruction set computing (RISC) machines (ARM) and field programmable gate array (FPGA) is proposed for low-field nuclear magnetic resonance (NMR) applications. This system has advantages, such as high speed analog to digital converter (ADC) acquisition and variable gain control. In this design, the system generator, a system development tool from the Xilinx Company, can implement internal signal processing functions. Experimental results showed that, compared with the traditional receiver, the digital receiver had compact structure, strong reconstruction, high sampling rate and low cost. In addition, variable gain control enabled the digital receiver to achieve a large dynamic range such that the signal-to-noise ratio (SNR) of the reconstructed image could be improved.

Key words: dynamic range, low-field NMR, heterogeneous dual-core, variable gain

CLC Number:

O482.53

LIU Ying, ZHANG Yu-wen, LIANG Zhen, ZHANG Hao-wei. A Heterogeneous Dual-Core Receiver System for Magnetic Resonance Applications[J]. Chinese Journal of Magnetic Resonance, 2017, 34(1): 100-107.

References

[1] LIU Y, LI G Y. F_TDM receiver for paralled acquisition of MRI[J]. Electron Lett, 2008, 44(7):454-456.
[2] REN J J, XU Q, LI G Y. A digital receiver for nuclear magnetic resonance spectrometer[J]. Chinese J Magn Reson, 2007, 24(1):27-33. 任洁静, 徐勤, 李鲠颖. 一体化核磁共振数字接收机的设计[J]. 波谱学杂志, 2007, 24(1):27-33.
[3] LIU C Y, TAN P, QIU J Q, et al. The principle & implement of digital receiver for NMR[J]. Chinese J Magn Reson, 2000, 17(20):161-165. 刘朝阳, 谭萍, 裘鉴卿, 等. 核磁共振谱仪数字接收机的原理与实现[J]. 波谱学杂志, 2000, 17(20):161-165.
[4] XU Z J, XU Q, SHEN J, et al. An analog receiver for nuclear magnetic resonance spectrometer based on AD607 chips[J]. Chinese J Magn Reson, 2006, 23(4):488-494. 徐志坚, 徐勤, 沈杰, 等. 基于AD607芯片的核磁共振模拟接收机[J]. 波谱学杂志, 2006, 23(4):488-494.
[5] YAN Z, ZHAO W Y, WANG H X, et al. Design of a parallel high-speed receiver system[J]. Chinese J Magn Reson, 2011, 28(2):199-206. 严政, 赵武贻, 王慧贤, 等. 磁共振信号并行高速接收系统设计[J]. 波谱学杂志, 2011, 28(2):199-206.
[6] AD8331 datasheet[EB]. Analog Devices, 2010.
[7] DAC5571 datasheet[EB]. Analog Devices, 2003.
[8] ADM7172 datasheet[EB]. Analog Devices, 2013.
[9] AD9910 datasheet[EB]. Analog Devices, 2007.
[10] Vivado Design Suite User Guide[EB]. Xilnx, 2014.
[11] MAO W P, LI Y Y, LIU Z, et al. A transmitter capable of fast modulation for NMR spectrometer-design and implementation[J]. Chinese J Magn Reson, 2013, 30(1):12-19. 毛文平, 李云燕, 刘造, 等. 具有快速调制功能NMR发射机的设计与实现[J]. 波谱学杂志, 2013, 30(1):12-19.
[12] SUN H Y, TANG W N, WANG W M. Improving signal-to-noise ratio in magnetic resonance imaging using dynamic receiver gain[J]. Chinese J Magn Reson, 2014, 31(4):515-522. 孙宏宇, 汤伟男, 王伟民. 利用动态接收增益提高磁共振成像信噪比的方法[J]. 波谱学杂志, 2014, 31(4):515-522.
[13] DIAO Y J, XIE J Y, XU J C, et al. A high-speed driver for NMR T/R switch[J]. Chinese J Magn Reson, 2016, 33(1):38-43. 刁玉剑, 谢君尧, 徐俊成, 等. 磁共振快速T/R开关驱动器研制[J]. 波谱学杂志, 2016, 33(1):38-43.
[14] LIU M, QIU W Q, SUN H J, et al. Progress in the portable NMR spectrometer[J]. Chinese J Magn Reson, 2014.31(4):505-514. 刘敏, 邱雯绮, 孙惠军, 等. 便携式核磁共振谱仪的研究进展[J]. 波谱学杂志, 2014.31(4):505-514.
[15] WANG H, SUN H Y, TANG W N, et al. An FPGA-based multi-channel receiver module for magnetic resonance imaging[J]. Chinese J Magn Reson, 2012, 29(2):240-247. 王洪, 孙宏宇, 汤伟男, 等. 基于单片FPGA的多通道磁共振成像接收模块[J]. 波谱学杂志, 2012, 29(2):240-247.