Results 1 to 10 of about 4,852,844 (283)

Optimizing the precision of laser speckle contrast imaging [PDF]

Scientific Reports, 2023
Laser speckle contrast imaging (LSCI) is a rapidly developing technology broadly applied for the full-field characterization of tissue perfusion. Over the recent years, significant advancements have been made in interpreting LSCI measurements and ...
Alberto González Olmos, Sharvari Zilpelwar, Smrithi Sunil, David A. Boas, Dmitry D. Postnov   +4 more
doaj   +4 more sources

Improving Contrast Accuracy and Resolution of Laser Speckle Contrast Imaging Using Two-Dimensional Entropy Algorithm

IEEE Access, 2021
A two-dimensional entropy laser speckle contrast imaging (E-LSCI) algorithm is proposed to improve the accuracy and resolution of laser speckle contrast imaging (LSCI) systems.
Xinglong Liu, Hui Yang, Ran Li
doaj   +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 with principal component and entropy analysis: a novel approach for depth-independent blood flow assessment [PDF]

Frontiers of Optoelectronics
Current study presents an advanced method for improving the visualization of subsurface blood vessels using laser speckle contrast imaging (LSCI), enhanced through principal component analysis (PCA) filtering.
Yu. Surkov, P. Timoshina, I. Serebryakova, D. Stavtcev, I. Kozlov, G. Piavchenko, I. Meglinski, A. Konovalov, D. Telyshev, S. Kuznetcov, E. Genina, V. Tuchin   +11 more
doaj   +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, Shuhao Shen, Anqi Qiu, Nanguang Chen   +3 more
doaj   +1 more source

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

A novel effective method for the assessment of microvascular function in male patients with coronary artery disease: a pilot study using laser speckle contrast imaging [PDF]

Brazilian Journal of Medical and Biological Research, 2016
Evaluation of microvascular endothelial function is essential for investigating the pathophysiology and treatment of cardiovascular and metabolic diseases.
J.P. Borges, G.O. Lopes, V. Verri, M.P. Coelho, P.M.C. Nascimento, D.A. Kopiler, E. Tibirica   +6 more
doaj   +3 more sources

Enhancement of microvessel in laser speckle image using gaussian kernel template [PDF]

Journal of Innovative Optical Health Sciences, 2019
Laser speckle contrast imaging (LSCI) is an optical imaging method, which can monitor microvascular flow variation directly without addition of any ectogenous dye.
Yameng Zhang, Yuemei Zhao, Weitao Li, Zhiyu Qian, Lidong Xing   +4 more
doaj   +1 more source

Enhancing laser speckle reduction by decreasing the pitch of a chiral nematic liquid crystal diffuser

Scientific Reports, 2021
The artefact known as speckle can plague numerous imaging applications where the narrow linewidth of laser light is required, which includes laser projection and medical imaging.
David J. Hansford, Yihan Jin, Steve J. Elston, Stephen M. Morris   +3 more
doaj   +1 more source

Laser Speckle Modeling and Simulation for Biophysical Dynamics: Influence of Sample Statistics

Journal of Biomedical Photonics & Engineering, 2017
Laser speckle is a statistical phenomenon and should be treated as such when establishing experimental parameters for using laser speckle techniques to infer information about the dynamics of a coherently illuminated medium, such as biological tissue ...
Kosar Khaksari, Sean J. Kirkpatrick
doaj   +1 more source