Characteristics of laser Doppler flowmeters with differing optical arrangements.
Characteristics of laser Doppler flowmeters with differing optical arrangements.
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具有不同光学布置的激光多普勒流量计的特性。
DOI：
10.3109/03091909209030774
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发表时间：
1992
影响因子：
--
通讯作者：
K. Mito
中科院分区：
文献类型：
--
作者：
K. Mito
最近，各种激光多普勒流量计（LDF）系统已被用于组织微循环的评价。然而，医生和研究人员经常表现出对它们的采样体积、稳定性和准确性的漠不关心，这与各种光学布置不同。在这项研究中，我们评估了三个LDF系统具有不同的光学安排的特点。血液和组织中的采样深度被发现与不同的光学布置不同，虽然从探头发射的激光功率几乎相等。在5.0%和36.5%之间的红细胞压积下，每个深度均发生显著变化。测量的稳定性和准确性也不同。在组织微循环的实际情况下，重要的是测量血流量，了解LDF系统特性的材料差异。
Recently, various laser Doppler flowmeter (LDF) systems have been used for evaluation of tissue microcirculation. However, indifference has often been shown by doctors and researchers regarding their sampling volume, stability and accuracy, which differ with various optical arrangements. In this study we evaluated the characteristics of three LDF systems with different optical arrangements. The sampling depths in both blood and tissue were found to differ with the different optical arrangements, although the laser power emitted from the probes is nearly equivalent. Each depth significantly changed at haematocrits between 5.0 and 36.5%. The stability and the accuracy of the measurements also differed. In the practical case of tissue microcirculation it is important to measure blood flow with an understanding of the material differences in the characteristics of the LDF systems.