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提出了一种利用互相关性测量空间横向流速的方法。通过设定谱域光学相干层析术系统的扫描模式X和Y,利用同一深度位置的相邻A扫信号间的互相关性与空间横向速度分量之间的数学关系,求得空间横向流速的绝对大小。详细阐述了该方法的测量原理。通过毛细管模拟实验描绘了截面的横向流速分量分布,并验证了所测得的平均横向流速大小与用注射泵设定的值基本一致。
A method of measuring cross-flow velocity in space using cross-correlation is proposed. By setting the scanning modes X and Y of the spectral optical coherence tomography system, the mathematical relationship between the cross-correlation between the adjacent A-scan signals and the spatial transverse velocity component at the same depth position is used to obtain the spatial transverse velocity Absolute size. The measuring principle of this method is elaborated. The cross-sectional velocity component distribution of the cross-section was plotted by capillary simulation and verified that the measured average lateral flow velocity was basically the same as that set by the syringe pump.