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基于边缘计算的FPGA实时材料分解系统用于光子计数CTCT.

Mengqing Su1, Xiaopeng Yu2, Qianyu Wu1

  • 1Laboratory of Image Science and Technology, School of Computer Science and Engineering, Southeast University, Nanjing, 210096, China; School of Biomedical Engineering, ShanghaiTech University, Shanghai, 201210, China; Jiangsu Provincial Joint International Research Laboratory of Medical Information Processing, Southeast University, Nanjing, 210096, China.

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此摘要是机器生成的。

光子计数计算机断层扫描 (PCCT) 面临着数据挑战. 这项研究将材料分解集成到CT门架内的现场可编程门阵列 (FPGA),从而实现更快,更高精度的成像.

关键词:
边缘计算是一种边缘计算.材料分解 材料分解摄像头计数CT CT 的数量.实时实时的时间.

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科学领域:

  • 医疗成像医学成像
  • 计算机断层扫描 (CT) 是一种计算机断层扫描.
  • 数据处理数据处理数据处理

背景情况:

  • 光子计数计算机断层扫描 (PCCT) 使用光子计数探测器 (PCD) 提供更高的空间分辨率.
  • 由于多个能量容器和较小的像素,PCCT产生了显著更大的原始数据 (传统CT的20-100倍).
  • 现有的滑环带宽限制了大型PCCT数据集的离线处理转移.

研究的目的:

  • 为PCCT数据处理开发一个高效的边缘计算解决方案.
  • 实现实时材料分解,直接在CT门架内的FPGA上实现.
  • 克服与高分辨率PCCT相关的数据传输瓶.

主要方法:

  • 为PCCT数据处理设计了一个边缘计算框架.
  • 一个快速的材料分解算法被开发和在FPGA上实现.
  • 处理工作流由离线分析转移到CT门架,使用集成的FPGA资源.

主要成果:

  • 拟议的系统成功地产生了无环文物材料分解结果.
  • 在减少数据量的情况下,可以实现精确的材料分解.
  • 真正的幻影数据集证明了系统的效率.

结论:

  • 使用FPGA资源将离线材料分解处理迁移到探测器叶片.
  • 与传统方法相比,该系统显著提高了处理速度和吞吐量.
  • 拟议的方法保持了线下处理的精度,同时实现了快速的结果.