...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Analog Integrated Circuits and Signal Processing >Automatic adjustment of a medical imaging data acquisition system to unknown delays in the input communication channels
【24h】

Automatic adjustment of a medical imaging data acquisition system to unknown delays in the input communication channels

机译：自动将医学成像数据采集系统调整为输入通信通道中的未知延迟

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this article, novel FIFO and RAM-based Synchronization Modules to keep synchronism throughout the input channels of a Data Acquisition Electronics (DAE) system are proposed. DAE is a main component of a Medical Imaging System, namely, a Positron Emission Mammography (PEM) system. DAE input data comes from a scanner constituted by an array of scintillating crystals. The scanner captures radiation generated by human cells injected with a radioactive substance and converts it into electrical signals. The corresponding digital information is sent to the DAE. In order to deal with the huge amount of data, flowing at high data rates, point-to-point (p2p) communication channels are used between the scanner and the DAE. Propagation delays associated with the different communication channels may change differently. Additionally, differences among channel delays may exceed one clock period. Keeping synchronism in these circumstances requires more than the classical asynchronous FIFO solution. All these aspects motivate the work proposed in this article. The PEM DAE system is a multi-board, multi-FPGA, multi-clock domain system. Therefore, the DAE architecture follows a Globally Asynchronous, Locally Synchronous (GALS) design style. The novel Synchronization Modules proposed in this article are implemented in the DAE. The effectiveness of these new structures is validated through simulation and laboratorial test. Simulation and test results are presented.
机译：在本文中，提出了新颖的基于FIFO和基于RAM的同步模块，以在数据采集电子（DAE）系统的整个输入通道中保持同步。 DAE是医学成像系统（即正电子放射乳腺摄影（PEM）系统）的主要组件。 DAE输入数据来自由闪烁晶体阵列构成的扫描仪。扫描仪捕获由注入放射性物质的人体细胞产生的辐射，并将其转换为电信号。相应的数字信息将发送到DAE。为了处理以高数据速率流动的大量数据，在扫描仪和DAE之间使用了点对点（p2p）通信通道。与不同通信信道关联的传播延迟可能会有所不同。另外，通道延迟之间的差异可能超过一个时钟周期。在这些情况下保持同步比传统的异步FIFO解决方案需要更多的工作。所有这些方面都激发了本文中提出的工作。 PEM DAE系统是一个多板，多FPGA，多时钟域系统。因此，DAE体系结构遵循全局异步，本地同步（GALS）设计风格。本文提出的新颖的同步模块在DAE中实现。这些新结构的有效性通过仿真和实验室测试得到了验证。给出了仿真和测试结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号