Department of Electronic Engineering, Sogang University, Seoul, Korea.
IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Jul;59(7):1386-94. doi: 10.1109/TUFFC.2012.2339.
We present a cost-effective portable ultrasound system based on a single field-programmable gate array (FPGA) for point-of-care applications. In the portable ultrasound system developed, all the ultrasound signal and image processing modules, including an effective 32-channel receive beamformer with pseudo-dynamic focusing, are embedded in an FPGA chip. For overall system control, a mobile processor running Linux at 667 MHz is used. The scan-converted ultrasound image data from the FPGA are directly transferred to the system controller via external direct memory access without a video processing unit. The potable ultrasound system developed can provide real-time B-mode imaging with a maximum frame rate of 30, and it has a battery life of approximately 1.5 h. These results indicate that the single FPGA-based portable ultrasound system developed is able to meet the processing requirements in medical ultrasound imaging while providing improved flexibility for adapting to emerging POC applications.
我们提出了一种基于单个现场可编程门阵列（FPGA）的经济高效的便携式超声系统，用于即时护理应用。在开发的便携式超声系统中，所有超声信号和图像处理模块，包括具有伪动态聚焦功能的有效 32 通道接收波束形成器，都嵌入在 FPGA 芯片中。对于整体系统控制，使用运行在 667 MHz 的移动处理器运行 Linux。来自 FPGA 的扫描转换的超声图像数据通过外部直接内存访问直接传输到系统控制器，而无需视频处理单元。所开发的便携式超声系统可以提供最大帧率为 30 的实时 B 模式成像，并且电池寿命约为 1.5 小时。这些结果表明，所开发的基于单个 FPGA 的便携式超声系统能够满足医学超声成像的处理要求，同时为适应新兴的 POCT 应用提供了更高的灵活性。
