Design of an MRI quadrature-data acquisition card  

作　　者：JIANG Zhongde ZU Donglin GU Xiaofang 

机构地区：[1]Institute of Heavy Ion Physics, Beijing Key Laboratory of Medical Physics ＆ Engineering, School of Physics, Peking University, Beijing 100871, China

出　　处：《Progress in Natural Science:Materials International》2006年第3期255-259,共5页自然科学进展·国际材料（英文版）

基　　金：Supported by National Natural Science Foundation of China (Grant No. 19675005)

摘　　要：A design of a quadrature-data acquisition card based on peripheral component interconnect （PCI） bus for mini-type magnetic resonance imaging （MRI） system is reported. It uses two high speed analog-to-digital converters （ADCs） to sample the MRI signals and two static random access memories （SRAMs） to store the data which will be read to the computer by PCI bus after sampling. All the logic control signals on the card are generated by the field programmable gate array （FPGA）. The software Foundation3.1 is used to design the FPGA and achieve useful result after simulating and implementing. The card has some merits that normal commercial cards do not have. For example, the sampling parameters can be varied according to different pulse sequences.照数据获得的一个图案基于外部部件相连(一种总线标准) 去微型的公共汽车磁性的回声成像(MRI ) 系统被报导。取样 MRI 信号和二静态的随机使用二个高速度 analog-to-digital 变换器(模数转换器) 存取记忆(静态存储器) 存储将被一种总线标准公共汽车在采样以后读到计算机的数据。卡片上的所有逻辑控制信号由这块地被产生可编程的门数组(FPGA ) 。软件基础 3.1 被用来设计 FPGA 并且在模仿并且实现以后完成有用结果。卡有正常的商业卡没有的一些记忆。例如，采样参数能根据不同脉搏序列被改变。

关 键 词：MRI data acquisition FPGA PCI bus 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]