Results 1 to 10 of about 13,509 (286)
Clinical applications of laser speckle contrast imaging: a review [PDF]
Journal of Biomedical Optics, 2019 When a biological tissue is illuminated with coherent light, an interference pattern will be formed at the detector, the so-called speckle pattern. Laser speckle contrast imaging (LSCI) is a technique based on the dynamic change in this backscattered light as a result of interaction with red blood cells. It can be used to visualize perfusion in various
Wido Heeman +2 more
exaly +7 more sources
Photothermal laser speckle imaging [PDF]
Optics Letters, 2014 The analysis of speckle contrast in a time-integrated speckle pattern enables visualization of superficial blood flow in exposed vasculature, a method we call laser speckle imaging (LSI). With current methods, LSI does not enable visualization of subsurface or small vasculature, because of optical scattering by stationary structures.
Regan, Caitlin +2 more
openaire +6 more sources
Laser speckle contrast imaging to assess microcirculation
Cardiology Journal, 2022 International ...
Marcin Hellmann +2 more
doaj +4 more sources
Handheld, point-of-care laser speckle imaging. [PDF]
J Biomed Opt, 2016 Laser speckle imaging (LSI) enables measurement of relative changes in blood flow in biological tissues. We postulate that a point-of-care form factor will lower barriers to routine clinical use of LSI. Here, we describe a first-generation handheld LSI device based on a tablet computer.
Farraro R, Fathi O, Choi B.
europepmc +6 more sources
Noise in laser speckle correlation and imaging techniques
Optics Express, 2010 We study the noise of the intensity variance and of the intensity correlation and structure functions measured in light scattering from a random medium in the case when these quantities are obtained by averaging over a finite number N of pixels of a digital camera.
S E Skipetrov +2 more
exaly +8 more sources
Laser speckle imaging for early detection of microbial colony forming units [PDF]
Biomedical Optics Express, 2021 Jänis Liepinš +2 more
exaly +2 more sources
Line Scan Spatial Speckle Contrast Imaging and Its Application in Blood Flow Imaging
Applied Sciences, 2021 Laser speckle imaging has been an indispensable tool for visualizing blood flow in biomedical applications. We proposed a novel design of the laser speckle imaging system, which combines confocal illumination and detection with various speckle analysis ...
E Du +3 more
doaj +1 more source
Speckle free laser imaging [PDF]
Conference on Lasers and Electro-Optics 2012, 2012 Many imaging applications require increasingly bright illumination sources, motivating the replacement of conventional thermal light sources with light emitting diodes (LEDs), superluminescent diodes (SLDs) and lasers. Despite their brightness, lasers and SLDs are poorly suited for full-field imaging applications because their high spatial coherence ...
Redding, Brandon +2 more
openaire +2 more sources
Real-Time Laser Speckle Imaging of Blood Flow with High Gray Level and High Resolution
Shanghai Jiaotong Daxue xuebao, 2023 Laser speckle contrast imaging (LSCI) is a large measurement ranging, real-time, high spatial resolution optical imaging method. Exisiting reserches show that the low gray level (8-bit) and low resolution (752×480 pixels) camera can effectively monitor ...
ZHANG Zelong, ZHANG Yingchao, WU Bo, DONG Wei, FAN Youben
doaj +1 more source
Magnetomotive laser speckle imaging [PDF]
Journal of Biomedical Optics, 2010 Laser speckle imaging (LSI) involves analysis of reflectance images collected during coherent optical excitation of an object to compute wide-field maps of tissue blood flow. An intrinsic limitation of LSI for resolving microvascular architecture is that its signal depends on relative motion of interrogated red blood cells.
Jeehyun, Kim +2 more
openaire +2 more sources