Design of a Data Transmission System for Magnetic Resonance Imaging Based on SerialLite II Protocol

doi:10.11938/cjmr20223012

Abstract

Abstract:

In order to improve the signal-to-noise ratio of magnetic resonance imaging signal acquisition and reduce the interference in signal transmission, the popular technical solution is to place the signal acquisition device in a shielded room, close to the receiving coil. In response to the previous scheme, this paper proposed an optical fiber data transmission scheme based on SerialLite II protocol to solve the problem of parameter configuration of signal acquisition and high-speed transmission of echo data. The circuit takes field programmable gate array (FPGA) device and small form pluggable (SFP) optical fiber module as the core of new instrument and realizes the download of configuration parameters of signal acquisition and the upload of echo data based on SerialLite II protocol. In order to facilitate programming, a NIOS II soft-core processor is constructed in FPGA to complete the sending, receiving and configuration of the parameters of the signal acquisition module. An experimental prototype was developed, and data transmission was tested. The results showed that this scheme can achieve high-speed data transmission. It takes only about 364.2 μs to transmit 64 K bytes of data through a 30-meter optical fiber. The scheme is reliable and has low-delay.

Key words: magnetic resonance imaging, data transmission, SerialLite II protocol, NIOS II processor, optical fiber

CLC Number:

O482.53

ZHANG Tianning,LEI Zhanzhi,XIAO Liang. Design of a Data Transmission System for Magnetic Resonance Imaging Based on SerialLite II Protocol[J]. Chinese Journal of Magnetic Resonance, 2023, 40(2): 179-191.

Figures/Tables 13

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Table 1

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单个通道采集点数	平均所需时间/μs	标准差/μs
256	23.42	0.010854
512	45.82	0.010981
1024	91.16	0.010334
2048	182.4	0.011059
4096	364.2	0.010483