Photoacoustic Doppler flow measurement in optically scattering media
Photoacoustic Doppler flow measurement in optically scattering media
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DOI：
10.1063/1.2825569
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发表时间：
2007-12-24
影响因子：
4
通讯作者：
Wang, Lihong V.
中科院分区：
文献类型：
--
作者：
Fang, Hui;Maslov, Konstantin;Wang, Lihong V.
我们最近观察到了流动的小吸收光粒子的光声多普勒效应。在这里，我们将该效应应用于测量光学散射介质中的模拟血液流体流动。介质中的光散射降低了光声多普勒信号的幅度，但不影响光声多普勒频移的大小或方向辨别。这项技术有望成为一种高灵敏度测量微循环血流的新的多普勒方法。(C)2007年美国物理研究所。
We recently observed the photoacoustic Doppler effect from flowing small light-absorbing particles. Here, we apply the effect to measure blood-mimicking fluid flow in an optically scattering medium. The light scattering in the medium decreases the amplitude of the photoacoustic Doppler signal but does not affect either the magnitude or the directional discrimination of the photoacoustic Doppler shift. This technology may hold promise for a new Doppler method for measuring blood flow in microcirculation with high sensitivity. (c) 2007 American Institute of Physics.