Abstract
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.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Zhongchi Luo, Zhijia Yuan, Yingtian Pan, and Congwu Du
Opt. Lett. 34(9) 1480-1482 (2009)
Lisa M. Richards, S. M. Shams Kazmi, Janel L. Davis, Katherine E. Olin, and Andrew K. Dunn
Biomed. Opt. Express 4(10) 2269-2283 (2013)
Owen Yang and Bernard Choi
Opt. Lett. 37(19) 3957-3959 (2012)