Chinese Journal of Magnetic Resonance ›› 2017, Vol. 34 ›› Issue (4): 489-497.doi: 10.11938/cjmr20172565

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A Magnetic Resonance Imaging Receiver Design Based on NI PXIe-7966R

HU Jin-jie1, YAO Jun-jiang1, XU Jun-Cheng1, LIU Jun2, WANG Zi2, JIANG Yu1   

  1. 1. Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China;
    2. National Instruments Corporation(China), Shanghai 201203, China
  • Received:2017-03-14 Revised:2017-10-26 Online:2017-12-05 Published:2017-11-29

Abstract: A magnetic resonance imaging receiver design based on NI PXIe-7966R is proposed, with which the magnetic resonance signals are sampled directly and down-converted digitally, the raw data are uploaded and the magnetic resonance image are restored. The system-level digital signal processing (DSP) development tools offered by NI LabVIEW field programmable gate array (FPGA) was used for FPGA function modeling, simulation and automatic code generation of hardware description language (HDL). It was very flexible during the digital down conversion (DDC) designing. The sampling rate of this module was 50 Mbps, and the receiver bandwidth could be varied between 100 Hz and 1 MHz. The experimental results showed that the receiver design is a high performance magnetic resonance receiver solution.

Key words: MRI, digital down conversion (DDC), field programmable gate array (FPGA), digital receiver

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