Using of speckled speckles and low-coherent speckles in the imaging of biofluid flow velocity

被引：0
|
作者：
Ulyanov, SS [1 ]
Tuchin, VV [1 ]
机构：
[1] Saratov State Univ, Dept Opt, Saratov 410071, Russia
来源：
COHERENCE DOMAIN OPTICAL METHODS IN BIOMEDICAL SCIENCE AND CLINICAL APPLICATIONS II, PROCEEDINGS OF | 1998年 / 3251卷
关键词：
speckles; Doppler effect; low-coherent interferometry;
D O I：
10.1117/12.306063
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Formulas relating to diffraction of focused Gaussian beam from narrow blood microvessel have been derived. Vessel has been considered as a set of moving random screens. The correlation function of intensity fluctuations of statistically inhomogeneous speckled speckles has been studied with regard to flow measurement. Dependencies of statistical characteristics of biospeckles with a small number of scatterers on the number of scattering screens and on the length of coherence of incident light have been analyzed. It has been shown that the value of Doppler bandwidth in the scattered light essentially depends on the spatial velocity distribution in the blood flow.
引用
收藏
页码：235 / 246
页数：12
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