Multimodal real-time imaging with laser speckle contrast and fluorescent contrast

被引:1
作者
Park, Hyun-Seo [1 ]
Shim, Min-Jae [2 ]
Kim, Yikeun [3 ]
Ko, Taek-Yong [4 ]
Choi, Jin-Hyuk [4 ]
Ahn, Yeh-Chan [1 ,2 ]
机构
[1] Pukyong Natl Univ, Ind Convergence Bion Engn 40, Busan 48513, South Korea
[2] Pukyong Natl Univ, Dept Biomed Engn, Busan 48513, South Korea
[3] Ulsan Natl Inst Sci & Technol, Dept Biomed Engn, Ulsan 44919, South Korea
[4] Kosin Univ, Gospel Hosp, Busan 49267, South Korea
关键词
Laser speckle contrast imaging (LSCI); Fluorescence imaging (FI); Near -infrared (NIR); Indocyanine green (ICG); Image processing; Multi -modal imaging; IN-VIVO; INDOCYANINE GREEN;
D O I
10.1016/j.pdpdt.2023.103912
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Introduction: Laser speckle contrast imaging (LSCI) can achieve real-time 2D perfusion maps non-invasively. However, LSCI is still difficult to use in general clinical applications because of movement sensitivity and limitations in blood flow analysis. To overcome this, fluorescence imaging (FI) is combined with LSCI using a light source with a wavelength of 785 nm in near-infrared (NIR) region and validates to visualize real-time blood perfusion.Materials and methods: The system was performed using Intralipid and indocyanine green (ICG) in a flow phantom that has three tubes and controlled the flow rate in 0-150 mu l/min range. First, real-time LSCI was monitored and measured the change in speckle contrast by reperfusion. Then, we visualized blood perfusion of a rabbit ear under the non-invasive condition by intravenous injection using a total of five different ICG concentration solutions from 128 mu M to 3.22 mM.Results: The combined system achieved the performance of processing laser speckle images at about 37-38 fps, and we simultaneously confirmed the fluorescence of ICG and changes in speckle contrast due to intralipid as a light scatterer. In addition, we obtained real-time contrast variation and fluorescent images occurring in rabbit's blood perfusion.Conclusions: The aim of this study is to provide a real-time diagnostic imaging system that can be used in general clinical applications. LSCI and FI are combined complementary for observing tissue perfusion using a single NIR light source. The combined system could achieve real-time visualization of blood perfusion non-invasively.
引用
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页数:12
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