| 基于System Generator的射频直接带通采样MRI信号接收方法 |
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| 引用本文： | 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. DOI: 10.11938/cjmr20182695 |
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| 作者姓名： | 刘颖 范书斐 宋明辉 章浩伟 |
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| 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,上海 200093;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;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;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 |
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| 基金项目： | 国家自然科学基金资助项目（61101174）. |
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| 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.
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| 关 键 词： | 带通采样 数字下变频 磁共振信号 抽取滤波 |
| 收稿时间： | 2018-11-28 |
An MRI Signal Receiving Method Based on Radio Frequency Direct Band-Pass Sampling with System Generator |
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| 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. DOI: 10.11938/cjmr20182695 |
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| Authors: | LIU Ying FAN Shu-fei SONG Ming-hui ZHANG Hao-wei |
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| Affiliation: | Institute of Medical Imaging Engineering, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| 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. |
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| Keywords: | band-pass sampling digital down conversion magnetic resonance signal decimation filter |
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