数字化磁共振谱仪的设计  

Design of a Digital Spectrometer for the MRI System

作　　者：赵聪[1] 刘正敏[1] 周荷琴[1] 冯焕清[1] 

机构地区：[1]中国科学技术大学自动化系,安徽合肥230026

出　　处：《中国医疗器械杂志》2007年第3期185-188,共4页Chinese Journal of Medical Instrumentation

摘　　要：谱仪是磁共振成像系统(MRI)中的核心部件。介绍了一种新型的数字化谱仪的设计方法,它使用PXI平台下的通用数据采集板卡和高分辨率定时器,通过编写软件实现谱仪的功能。详细讨论了该软件的结构和设计细节,并介绍了实验结果。A spectrometer is one of the most important parts in a Magnetic Resonance Imaging （MRI） system. This paper describes the design of a digital MRI spectrometer. It is constructed on a PXl platform with several data acquisition boards and a high-resolution timing board. All functions of a MRI spectrometer are realized by the specially- designed software. The software architecture and its implementing details are discussed and experimental results are introduced.

关 键 词：磁共振成像系统 数字化谱仪 PXI总线 数据采集 

分 类 号：R445.2[医药卫生—影像医学与核医学]