基于System Generator的射频直接带通采样MRI信号接收方法

doi:10.11938/cjmr20182695

波谱学杂志 ›› 2019, Vol. 36 ›› Issue (3): 278-287.doi: 10.11938/cjmr20182695

基于System Generator的射频直接带通采样MRI信号接收方法

刘颖, 范书斐, 宋明辉, 章浩伟

上海理工大学医疗器械与食品学院, 医学影像工程研究所, 上海 200093

收稿日期:2018-11-28 发布日期:2019-02-01
通讯作者: 刘颖 E-mail:ling2431@163.com
基金资助:
国家自然科学基金资助项目（61101174）.

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

LIU Ying, FAN Shu-fei, SONG Ming-hui, ZHANG Hao-wei

Institute of Medical Imaging Engineering, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

Received:2018-11-28 Published:2019-02-01

摘要/Abstract

摘要： 本文将软件无线电技术应用于磁共振成像（Magnetic Resonance Imaging，MRI）信号接收，提出了射频直接带通采样MRI信号接收的方法.基于此接收方法设计了一种MRI信号数字解调方法，该方法利用Xilinx公司推出的数字信号处理（Digital Signal Processing，DSP）设计开发工具——System Generator实现，同时设计验证了能够灵活实现数字下变频（Digital Down Conversion，DDC）功能的DDC系统.仿真与实验平台均验证了该接收方法的正确性和有效性.

关键词: 带通采样, 数字下变频, 磁共振信号, 抽取滤波

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

中图分类号:

O482.53

刘颖, 范书斐, 宋明辉, 章浩伟. 基于System Generator的射频直接带通采样MRI信号接收方法[J]. 波谱学杂志, 2019, 36(3): 278-287.

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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基于System Generator的射频直接带通采样MRI信号接收方法

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

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