Dual-wavelength laser speckle imaging to simultaneously access blood flow, blood volume, and oxygenation using a color CCD camera

作者：Wang Jia; Wang Yaru; Li Bing; Feng Danqi; Lu Jinling; Luo Qingming; Li Pengcheng^*

来源：Optics Letters, 2013, 38(18): 3690-3692.

DOI：10.1364/OL.38.003690

We developed a dual-wavelength laser speckle imaging system using a single industrial-grade color CCD camera with Bayer filters to simultaneously image changes in blood flow, blood volume, and oxygenation. One frame of a color image recorded with dual-wavelength laser illumination provides not only the intensity fluctuation of the speckle pattern, but also the dual-wavelength optical reflectance signal. The method was validated using a tissue phantom and cuff ischemia experiments in the human arm. This system achieves complete time synchronization, unlike conventional time-sharing systems. Compared with a multicamera system, it also avoids the problem of image registration and can be less expensive.

• 出版日期2013-9-15
• 单位华中科技大学