中文摘要：

针对磁共振成像仪控制台的数字化、小型化发展趋势,设计了一种0.5T磁共振关节成像仪控制台的总体框架。以FPGA的SOPC（System On the Programmable Chip）系统为仪器控制核心,开发了数字化磁共振成像仪控制台部分,将网络传输、数据处理、射频脉冲及梯度波形产生、外设驱动等各个功能集成在单一FPGA芯片中。实现上位机对输出波形,数字调制解调,梯度涡流补偿,抽取滤波等功能的控制。通过各个模块测试,系统功能稳定、脉冲波形可定制,为小型化磁共振成像仪的控制台研制提供了一种可靠性高而灵活的设计方案。

英文摘要：

Aiming at the development of the digitalization and miniaturization of the MRI system console,the basic structure and work flow of console for the 0.5T MRI were introduced.The consde is designed based on highly integrated SOPC system of FPGA,network communication,data processing,waveform generating is realized and peripherals in signal FPGA is controlled.Realization of tuning the wave,modulation demodulation,gradient eddy current compensation,decimation and multiple filtering by PC.Finally the system are tested,results show that the system has the merits of high reliability,flexible pulse sequences,providing a compact and flexible scheme for MRI console.