波谱学杂志 ›› 2006, Vol. 23 ›› Issue (4): 487-494.

• 研究论文 • 上一篇    下一篇

基于AD607芯片的核磁共振模拟接收机

徐志坚;徐勤;沈杰;李鲠颖   

  1. (华东师范大学物理系 华东师范大学光谱学与波谱学教育部重点实验室,上海 200062)
  • 收稿日期:2005-12-31 修回日期:2006-03-06 出版日期:2006-12-05 发布日期:2009-12-05
  • 通讯作者: 李鲠颖

An Analog Receiver for Nuclear Magnetic Resonance Spectrometer Based on AD607 Chips

XU Zhi-jian;XU Qin;SHEN Jie;LI Geng-ying   

  1. (Key Laboratory for Optical and Magnetic Resonance Spectroscopy of Ministry of Education Department of Physics, East China Normal University, Shanghai 200062, People’s Republic of China)
  • Received:2005-12-31 Revised:2006-03-06 Online:2006-12-05 Published:2009-12-05
  • Contact: LI Geng-ying

摘要: 核磁共振波谱和核磁共振成像技术(MRI)已经成为一种广泛应用于物理、化学、材料、生物医学等领域的重要研究工具和医疗诊断手段,但是仪器复杂、价格昂贵. 本文提出了一种改进的基于AD607芯片的模拟接收机设计. 相对于传统的模拟接收机,此设计可以减少接收机使用的外围器件的数量,从而简化设备. 而相对于全数字接收机,本文提出的设计结构简单,并且可以工作在较高的频率. 文章最后给出了核磁共振成像实验的结果.

关键词: 核磁共振, 磁共振成像, 模拟接收机, 单片系统, PCI

Abstract: Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) technologies are widely used for physical, chemical, material and biomedical analysis and medical diagnosis. In attempting to design and build NMR/MRI systems that are significantly cheaper and with simpler configuration than the commercially available systems, we designed and built an analog receiver for NMR/MRI spectrometers based on AD607 (complete receiver on a single chip). Compared to the traditional analog receivers, the proposed design uses components with much smaller sizes and has a rather simple structure. In addition, it can work at higher frequency range than conventional digital receivers can. Detailed description of the design and experimental demonstration of the performance of the receiver are given in the paper.

Key words: nuclear magnetic resonance, magnetic resonance imaging, analog receiver, system on chip, PCI

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