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首页> 外文会议>BMEI 2012;International Conference on Biomedical Engineering and Informatics >Medical high-frequency ultrasound imaging using Golay-coded pulse excitation
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Medical high-frequency ultrasound imaging using Golay-coded pulse excitation

机译：使用Golay编码脉冲激励的医学高频超声成像

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摘要

This paper combined the coded excitation with the technique of ophthalmic high-frequency ultrasonic imaging, and proposed a new high-velocity data detection and signal processing method. 16-bit Golay complementary sequences were produced by FPGA, which excited the probe to produce ultrasonic waves. Data detection circuit achieved the digitalized of the 15 MHz high-frequency ultrasonic echo signals in real time. Sampling rate was 120MHz, and sampling bit was 14 bit. Decoded compression arithmetic was realized by FPGA in real time, in which A code compression was alternated with B code compression. The return echo was correlated with the corresponding decode filter A and filter B respectively, and then the echo was delayed and summed to complete the decoding process. The experiment indicated that coded excitation can effectively increase the range of mainlobe and decrease the range of sidelobe. This technique can effectively raise the signal-to-noise ratio, and has significant research value in advancing the ophthalmic ultrasonic image quality and raising the safety of the equipment.
机译：本文将编码激励与眼科高频超声成像技术相结合，提出了一种新的高速数据检测与信号处理方法。 FPGA产生16位Golay互补序列，该序列激发探针产生超声波。数据检测电路实时实现了15 MHz高频超声回波信号的数字化。采样率为120MHz，采样位为14位。通过FPGA实时实现解码压缩算法，其中A代码压缩与B代码压缩交替进行。返回的回声分别与相应的解码滤波器A和滤波器B相关联，然后对回声进行延迟和求和以完成解码过程。实验表明，编码激励可以有效地增加主瓣的范围，减小旁瓣的范围。该技术可以有效地提高信噪比，对提高眼科超声图像质量，提高设备安全性具有重要的研究价值。

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