MRI梯度波形发生器研究进展  

Research Progress of MRI Gradient Waveform Generator

作　　者：刘颖[1] 林羚 袁斌华 章浩伟[1] LIU Ying;LIN Ling;YUAN Binhua;ZHANG Haowei(School of Health Science and Engineering,University of Shanghai for Science and Technology,Shanghai 200093)

机构地区：[1]健康科学与工程学院,上海理工大学,上海200093

出　　处：《波谱学杂志》2024年第1期99-115,共17页Chinese Journal of Magnetic Resonance

基　　金：上海介入医疗器械工程技术研究中心(18DZ2250900).

摘　　要：成像体素空间位置的准确编码对于磁共振成像(MRI)的空间定位至关重要.为了保证空间编码的准确性,获得高性能的梯度磁场是关键.梯度波形发生器是产生梯度磁场的核心部件,本文简要介绍了梯度波形发生器的工作原理和组成部分,总结了近二十年来基于不同设计方案设计的梯度波形发生器的研究进展,详细探讨了梯度波形预加重的实现方法,并对梯度波形发生器未来的研究和发展方向进行了展望.The accurate encoding of the spatial position of imaging voxels is crucial for the spatial localization of magnetic resonance imaging(MRI).To guarantee spatial encoding accuracy,it is essential to obtain high-performance gradient magnetic fields.Gradient waveform generators are the core part of generating gradient magnetic fields.This paper briefly introduces the working principle and components of gradient waveform generator,summarizes the research progress of gradient waveform generator based on different design schemes in the past 20 years,and discusses the realization methods in detail of gradient waveform pre-emphasis.Besides,the future research and development direction of gradient waveform generators is prospected.

关 键 词：磁共振成像 梯度波形发生器 数字信号处理器 现场可编程门阵列 预加重 

分 类 号：O482.53[理学—固体物理]