Comparison of red and green laser Doppler imaging of blood flow
Comparison of red and green laser Doppler imaging of blood flow
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DOI：
10.1002/lsm.20085
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发表时间：
2004-01-01
影响因子：
2.4
通讯作者：
King, TA
中科院分区：
文献类型：
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作者：
Murray, AK;Gorodkin, RE;King, TA
背景和目标：灌注的激光多普勒成像（LDI）已经用新的绿色波长（532 nm）与HeNe激光（633 nm）进行比较，目的是验证绿色激光波长作为研究工具。研究设计/材料和方法：研究了波长和功率对图像的影响，并检查了手指闭塞和背部局部加热后的灌注反应，结果：红色和绿色LDI之间最显著的区别是绿色LDI上没有红色LDI所看到的静脉。使用静脉LDI曲线对差异进行了量化。在由红色和绿色LDI（分别为3和5 mW）成像的闭塞和热刺激的血流反应之间发现了差异。结果进行了讨论的背景下，光penetration.Conclusions：红色和绿色波长出现图像的微循环的不同组成部分。激光外科医学35：191-200，2004年。(C)2004 Wiley-Liss，Inc.
Background and Objectives: Laser Doppler imaging (LDI) of perfusion has been performed with a novel green wavelength (532 nm) for comparison with a HeNe laser (633 nm), the aim being validation of the green laser wavelength as a research tool.Study Design/Materials and Methods: The effect of wavelength and power on images was investigated and perfusion response following both finger occlusion and local heating of the dorsum were examined as reproducible stimuli for clinical studies.Results: The most striking difference between red and green LDI is the absence of veins on green LDI, which are seen with red LDI. Differences have been quantified using vein LDI profiles. Differences were found between blood flow responses imaged by red and green LDI (3 and 5 mW, respectively) for occlusion and heat stimuli. Results are discussed in the context of light penetration.Conclusions: Red and green wavelengths appear to image different components of the microcirculation. Lasers Surg. Med. 35:191-200, 2004. (C) 2004 Wiley-Liss, Inc.