Receiving MRI Echo with Software-Defined Radio Approach

Abstract

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.

Key words: MRI, echo, software-defined radio, IF sampling, RF sampling, band-pass sampling

CLC Number:

R445.2

HU Zeng-qian*, JIN Tao, ZHANG Xin-ming. Receiving MRI Echo with Software-Defined Radio Approach[J]. Chinese Journal of Magnetic Resonance.

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