基于模块计算机的千兆网磁共振谱仪控制接口

波谱学杂志 ›› 2012, Vol. 29 ›› Issue (4): 499-507.

• 磁共振谱仪研制技术进展专栏 • 上一篇下一篇

基于模块计算机的千兆网磁共振谱仪控制接口

王洪¹，熊泽冲²，林先钗³，王为民^2*

1. 泰山医学院放射学院, 山东泰安 271016;
2. 北京大学信息科学与技术学院电子系量子所, 北京 100871;
3. 北京万东医疗装备股份有限公司磁共振成像产品事业部, 北京 100016

收稿日期:2012-03-01 修回日期:2012-03-21 出版日期:2012-12-05 发布日期:2012-12-05
基金资助:
国家科技重大专项资助项目(2011ZX05008-004).

A Computer-on-Module Based High-Performance Control Interface with Gigabit Ethernet for Magnetic Resonance Imaging Spectrometer

WANG Hong¹, XIONG Ze-Chong², LIN Xian-Chai³, WANG Wei-Min^2*

1. Department of Radiology, Taishan Medical University, Tai'an 271016, China;
2. Institute of Quantum Electronics, School of Electronic Engineering and Computer Science, Peking University, Beijing 100871, China;
3. Beijing Wandong Medical Equipment Co., Ltd, Beijing 100016, China

Received:2012-03-01 Revised:2012-03-21 Online:2012-12-05 Published:2012-12-05
Supported by:
国家科技重大专项资助项目(2011ZX05008-004).

摘要/Abstract

摘要：

提出了一个基于模块计算机的磁共振谱仪的控制接口，它建立了核磁共振成像谱仪与上位计算机之间的通信，实现了控制谱仪、上传和下载、数据处理等功能，具备较高的传输速度，以及较好的实时性. 该接口以硬件模块的方式集成到谱仪上，通过千兆和百兆以太网连接上位机，接收下传至谱仪的序列；用中断机制和直接内存存取(DMA)方式实现与谱仪的数据传输，并将处理采集到的回波数据并上传到上位机. 控制接口的设计采用模块计算机Computer-On-Module(COM)的设计思路，以高性能的处理器为嵌入式平台，在Linux操作系统下开发驱动程序和应用程序. 实验证明，该模块具有数据处理速度快、传输速率高，成本低，体积紧凑，扩展性强等特点，是实现磁共振谱仪高性能的控制接口的理想方案.

关键词: 核磁共振(NMR), 谱仪, 模块计算机, 控制接口

Abstract:

A control interface for magnetic resonance imaging (MRI) spectrometer was presented. The control interface connects the host computer and the MRI spectrometer, which has the following functionalities: supervising the operation of pulse programmer and receiver, using direct memory access (DMA) and transferring the processed data via Gigabit Ethernet transmission. The real-time interaction between the host PC and the spectrometer is achieved through two Ethernet links. Its scalable hardware consists of a computer-on-module (COM) and a carrier. The COM possesses a high-performance CPU, which has both Cotex-A8 and DSP sub-units. The software, including Linux kernel, drivers and a console server, was developed for the board. Tests show that this scalable structure can achieve high data processing & transmission speed. With features such as low-cost and highly-integrated characteristics, the control interface is suitable for most MRI spectrometers, especially for portable ones.

Key words: magnetic resonance imaging, spectrometer, computer-on-module, control interface

中图分类号:

O482.53

王洪，熊泽冲，林先钗，王为民. 基于模块计算机的千兆网磁共振谱仪控制接口[J]. 波谱学杂志, 2012, 29(4): 499-507.

WANG Hong, XIONG Ze-Chong, LIN Xian-Chai, WANG Wei-Min. A Computer-on-Module Based High-Performance Control Interface with Gigabit Ethernet for Magnetic Resonance Imaging Spectrometer[J]. Chinese Journal of Magnetic Resonance, 2012, 29(4): 499-507.

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基于模块计算机的千兆网磁共振谱仪控制接口

A Computer-on-Module Based High-Performance Control Interface with Gigabit Ethernet for Magnetic Resonance Imaging Spectrometer

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