数字化磁共振谱仪的设计

Design of a Digital Spectrometer for the MRI System

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.