波谱学杂志2013，Vol.30Issue(1)：29-39,11.
用软件无线电方法实现MRI回波信号接收
Receiving MRI Echo with Software-Defined Radio Approach
摘要
Abstract
This paper briefly introduces software-defined radio, as well as three types of radio frequency (RF) receiving system based on the method of software-defined radio: RF sampling with low-pass filtering for fully bandwidth; RF directly sampling with band-pass filtering for narrow band signal and IF sampling with band-pass filtering for broad band signal. Then basic principles of receiving MRI echo with the method of software-defined radio are explained. The actual design of RF receiving system for MRI echo with the software-defined radio was presented, including receiving system diagram, working principle, selection and analysis of design parameters, implementation of some function module, and issues that should be considered during design and implementation. Analysis and comparison of three types of RF receiving system based on software-defined radio for low field MRI spectrometer were given.关键词
磁共振成像(MRI)/回波信号接收/软件无线电/中频采样/射频采样/带通采样Key words
MRI； echo； software-defined radio； IF sampling； RF sampling； band-pass sampling分类
医药卫生引用本文复制引用
胡曾千,金涛,章新明..用软件无线电方法实现MRI回波信号接收[J].波谱学杂志,2013,30(1):29-39,11.
