Results 1 to 10 of about 32,925 (280)
Tools for classification of growing/non-growing bacterial colonies using laser speckle imaging [PDF]
Frontiers in Microbiology, 2023 Prior research has indicated the feasibility of assessing growth—associated activity in bacterial colonies through the application of laser speckle imaging techniques.
Ilya Balmages +8 more
doaj +2 more sources
Multifunctional laser speckle imaging. [PDF]
Biomed Opt Express, 2020 We have developed a multi-functional laser speckle imaging system, which can be operated in both the surface illumination laser speckle contrast imaging (SI-LSCI) mode and the line scan laser speckle contrast imaging (LS-LSCI) mode. The system has been applied to imaging the chicken embryos to visualize both the blood flow and morphological details of ...
Du E, Shen S, Chong SP, Chen N.
europepmc +3 more sources
Confocal laser speckle autocorrelation imaging of dynamic flow in microvasculature
Opto-Electronic Advances, 2022 Laser speckle imaging has been widely used for in-vivo visualization of blood perfusion in biological tissues. However, existing laser speckle imaging techniques suffer from limited quantification accuracy and spatial resolution.
E Du +3 more
doaj +3 more sources
Quantitative modeling of laser speckle imaging [PDF]
Optics Letters, 2006 We have analyzed the image formation and dynamic properties in laser speckle imaging (LSI) both experimentally and with Monte-Carlo simulation. We show for the case of a liquid inclusion that the spatial resolution and the signal itself are both ...
Alfred Buck +17 more
core +7 more sources
The Methodology of Adaptive Levels of Interval for Laser Speckle Imaging [PDF]
Journal of ImagingA methodology is proposed for use in the laser speckle imaging field. This methodology modified the graphical and numerical speckle pattern imaging methods to improve their extraction and discrimination capabilities when processing the embedded temporal ...
Ali A. Al-Temeemy
doaj +2 more sources
Laser speckle imaging of the hippocampus. [PDF]
Biomed Opt ExpressResearch on hippocampal blood flow is essential for gaining insight into its involvement in learning and memory and its role in age-related cognitive impairment and dementia. In this study, we applied laser speckle contrast imaging (LSCI) and dynamic light scattering imaging (DLSI) to monitor perfusion in mouse hippocampus via a chronic, optically ...
Mikkelsen SH +3 more
europepmc +4 more sources
Handheld motion stabilized laser speckle imaging. [PDF]
Biomed Opt Express, 2019 Laser speckle imaging (LSI) is a wide-field, noninvasive optical technique that allows researchers and clinicians to quantify blood flow in a variety of applications. However, traditional LSI devices are cart or tripod based mounted systems that are bulky and potentially difficult to maneuver in a clinical setting.
Lertsakdadet B +4 more
europepmc +5 more sources
Speckle-free laser imaging using random laser illumination [PDF]
Nature Photonics, 2012 Exploiting the low spatial coherence of specifically designed random lasers, researchers demonstrate speckle-free full-field imaging in the regime of intense optical scattering. Their results show that the quality of images generated from random-laser illumination is superior to those generated from spatially coherent illumination.
Brandon, Redding +2 more
openaire +4 more sources
Adapted Correlation Methods for Laser Speckle Imaging of Microbial Activity: Evaluation and Rationale [PDF]
SensorsThe laser speckle technique provides a non-invasive remote sensing method for monitoring biological dynamics. In this study, we focus on assessing microbial growth through systematic comparison of correlation-based speckle image analysis methods.
Ilya Balmages +5 more
doaj +2 more sources
Laser Speckle Imaging of Sensitized Acupoints. [PDF]
Evid Based Complement Alternat Med, 2018 Acupoints microcirculatory dynamics vary depending on the body’s health status. However, the functional changes observed during acupoint sensitization, that is, the disease‐induced change from a “silenced” to an “activated” status, remain elusive. In this study, the microcirculatory changes at acupoints during sensitization were characterized.
Ding N +5 more
europepmc +4 more sources