Results 11 to 20 of about 4,592,774 (277)

Laser speckle contrast imaging: theoretical and practical limitations [PDF]

Journal of Biomedical Optics, 2013
When laser light illuminates a diffuse object, it produces a random interference effect known as a speckle pattern. If there is movement in the object, the speckles fluctuate in intensity. These fluctuations can provide information about the movement.
Marcus Larsson, Sean Kirkpatrick
exaly   +7 more sources

Application of laser speckle contrast imaging in laparoscopic surgery [PDF]

Biomedical Optics Express, 2019
Anastomotic leakage is a worldwide problem in gastrointestinal surgery which seems to be related to the state of microcirculation. Laser speckle contrast imaging (LSCI) could give surgeons insight in the state of microcirculation to attune the site of anastomosis. This work studies the feasibility of LSCI as a tool for this purpose.
E Christiaan Boerma, Klaas Dijkstra, Wido Heeman   +2 more
exaly   +5 more sources

Choosing a laser for laser speckle contrast imaging [PDF]

Scientific Reports, 2019
AbstractThe use of laser speckle contrast imaging (LSCI) has expanded rapidly for characterizing the motion of scattering particles. Speckle contrast is related to the dynamics of the scattering particles via a temporal autocorrelation function, but the quality of various elements of the imaging system can adversely affect the quality of the signal ...
Dmitry D. Postnov, Xiaojun Cheng, Sefik Evren Erdener, David A. Boas   +3 more
openaire   +6 more sources

Investigation of speckle pattern dynamics by laser speckle contrast imaging [PDF]

Biophotonics: Photonic Solutions for Better Health Care VI, 2018
Laser speckle contrast imaging (LSCI) is a simple and quite powerful method for visualization of flow, microcirculation and perfusion. In current study the speckle contrast variations towards breaking ergodicity conditions are considered with a final aim of envision a practical approach allowing real-time imaging of variations in dynamic properties of ...
Sdobnov, A. (Anton), Bykov, A. (Alexander), Popov, A. (Alexey), Zherebtsov, E. (Evgeny), Meglinski, I. (Igor)   +4 more
core   +5 more sources

Comparing laser speckle contrast imaging and indocyanine green angiography for assessment of parathyroid perfusion [PDF]

Scientific Reports, 2023
Accurate intraoperative assessment of parathyroid blood flow is crucial to preserve function postoperatively. Indocyanine green (ICG) angiography has been successfully employed, however its conventional application has limitations.
Emmanuel A. Mannoh, Naira Baregamian, Giju Thomas, Carmen C. Solόrzano, Anita Mahadevan-Jansen   +4 more
doaj   +2 more sources

Spatiotemporal laser speckle contrast analysis for blood flow imaging with maximized speckle contrast

Journal of Biomedical Optics, 2010
Laser speckle contrast imaging is a technique used for imaging blood flow without scanning. Though several studies have attempted to combine spatial and temporal statistics of laser speckle images for reducing image noise as well as preserving acceptable spatiotemporal resolution, the statistical accuracy of these spatiotemporal methods has not been ...
Pengcheng Li, Qingming Luo, Weihua Luo   +2 more
exaly   +3 more sources

Real-time intestinal perfusion assessment for anastomotic site selection using laser speckle contrast imaging: Verification in a porcine model [PDF]

Surgery Open Science
Introduction: Adequate blood perfusion is widely recognized as a crucial factor for successful healing of an anastomosis and avoid anastomotic leakage.
Danique J.I. Heuvelings, Mahdi Al-Taher, Joost Calon, Manish Chand, Laurents P.S. Stassen, Tim Lubbers, Kevin P. Wevers, Luigi Boni, Nicole D. Bouvy, Wido Heeman   +9 more
doaj   +2 more sources

Laser Speckle Contrast Imaging of Skin Changes in Arteriovenous Malformation [PDF]

Circulation: Cardiovascular Imaging, 2017
Laser speckle contrast imaging of skin changes in arteriovenous malformation.
Humeau-Heurtier, Anne, Martin, Ludovic, Bazeries, Paul, Abraham, Pierre, Henni, Samir   +4 more
openaire   +5 more sources

Dual-Wavelength Confocal Laser Speckle Contrast Imaging Using a Deep Learning Approach

Photonics
This study developed a novel dual-wavelength confocal laser speckle imaging platform. The system includes both visible and near-infrared lasers and two imaging modes: confocal and wide-field laser speckle contrast imaging.
E Du, Haohan Zheng, Honghui He, Shiguo Li, Cong Qiu, Weifeng Zhang, Guoqing Wang, Xingquan Li, Lan Ma, Shuhao Shen, Yuan Zhou   +10 more
doaj   +2 more sources

Laser speckle contrast imaging is sensitive to advective flux

Journal of Biomedical Optics, 2016
Unlike laser Doppler flowmetry, there has yet to be presented a clear description of the physical variables that laser speckle contrast imaging (LSCI) is sensitive to. Herein, we present a theoretical basis for demonstrating that LSCI is sensitive to total flux and, in particular, the summation of diffusive flux and advective flux.
Sean Kirkpatrick, Kosar Khaksari
exaly   +3 more sources