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Lasers Med Sci. 2009 Jul;24(4):639-51. doi: 10.1007/s10103-008-0626-3. Epub 2008 Dec 3.

Review of laser speckle contrast techniques for visualizing tissue perfusion.

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  • 1Biophysical Engineering Group Institute for Biomedical Technology, University of Twente, Enschede, The Netherlands. m.j.draijer@utwente.nl

Abstract

When a diffuse object is illuminated with coherent laser light, the backscattered light will form an interference pattern on the detector. This pattern of bright and dark areas is called a speckle pattern. When there is movement in the object, the speckle pattern will change over time. Laser speckle contrast techniques use this change in speckle pattern to visualize tissue perfusion. We present and review the contribution of laser speckle contrast techniques to the field of perfusion visualization and discuss the development of the techniques.

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