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A single FPGA-based portable ultrasound imaging system for point-of-care applications

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7 Author(s)
Gi-duck Kim ; Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea ; Changhan Yoon ; Sang-Bum Kye ; Youngbae Lee
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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.

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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:59 ,  Issue: 7 )