Digital signal processor-based real-time optical Doppler tomography system.
Digital signal processor-based real-time optical Doppler tomography system.
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DOI：
10.1117/1.1695409
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发表时间：
2004-05
影响因子：
3.5
通讯作者：
Shikui Yan;D. Piao;Yueli L. Chen;Quing Zhu
中科院分区：
文献类型：
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作者：
Shikui Yan;D. Piao;Yueli L. Chen;Quing Zhu
我们提出了一个实时数据处理和显示单元的基础上定制设计的数字信号处理器（DSP）模块的组织结构和多普勒血流成像。DSP模块被并入到传统的光学相干层析成像系统中。我们还展示了嵌入先进的多普勒处理算法的DSP模块的灵活性。该DSP模块采用了两种先进的速度估计算法。实验结果表明，该DSP系统可以在M扫描模式下忠实地捕捉到每分钟几百个脉冲的脉动流。在体内成像大鼠的腹部血流也提出。
We present a real-time data-processing and display unit based on a custom-designed digital signal processor (DSP) module for imaging tissue structure and Doppler blood flow. The DSP module is incorporated into a conventional optical coherence tomography system. We also demonstrate the flexibility of embedding advanced Doppler processing algorithms in the DSP module. Two advanced velocity estimation algorithms previously introduced by us are incorporated in this DSP module. Experiments on Intralipid flow demonstrate that a pulsatile flow of several hundred pulses per minute can be faithfully captured in M-scan mode by this DSP system. In vivo imaging of a rat's abdominal blood flow is also presented.