An MRI Signal Receiving Method Based on Radio Frequency Direct Band-Pass Sampling with System Generator

doi:10.11938/cjmr20182695

Abstract

Abstract: In this paper, the use of software radio technology for signal reception in magnetic resonance imaging (MRI) was attempted. A radio frequency direct band-pass sampling method was proposed for signal reception in MRI. For this method, a digital demodulation algorithm was designed and implemented with System Generator, a design and development tool of digital signal processing (DSP) developed by the Xilinx company. At the same time, a digital down conversion (DDC) system was designed and tested to flexibly implement the DDC function. The validity of the proposed receiving method was confirmed by numerical simulations and experiments.

Key words: band-pass sampling, digital down conversion, magnetic resonance signal, decimation filter

CLC Number:

O482.53

LIU Ying, FAN Shu-fei, SONG Ming-hui, ZHANG Hao-wei. An MRI Signal Receiving Method Based on Radio Frequency Direct Band-Pass Sampling with System Generator[J]. Chinese Journal of Magnetic Resonance, 2019, 36(3): 278-287.

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