基于 FPGA 的 PET 晶体位置映射图数据采集的算法研究

摘要

PET晶体位置映射图数据采集是PET数据采集和图像重建系统的重要组成部分。采用Xil-inx公司推出的快速可编程门阵列（ FPGA）开发环境System Generator for DSP 系统设计工具进行平板PET晶体位置映射图数据采集的算法研究；在Lyrtech VHS-ADC开发平台上进行软硬件协同仿真与验证，在开发设计上可大幅度地缩短开发周期，节约成本。实验结果：PET晶体位置映射图白色散点清晰，易于分割，满足PET数据采集系统的要求。%The data acquisition of PET crystal flood image is an important part of PET data acquisition and image reconstruction system .A data acquisition algorithm of PET crystal flood image is developed with System Genera -tor for DSP, which is FPGA design tool released by Xilinx;the hardware and software co -simulation and veri-fication on Lyrtech VHS -ADC development platform can greatly shorten the development cycle and save the costs .Experimental results show that the white scattered points on PET crystal flood image are clear and easy to split, which can meet the requirements of the PET data acquisition system .