Results 31 to 40 of about 234,282 (231)
IEEE Access, 2021 The speckle phenomenon produced by coherent waves interfering with each other is undesirable in laser imaging systems. For each of the laser speckle reduction methods in the literature, it is difficult to reduce speckle to an extremely low level (<
Jun Zhou +6 more
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BMC Surgery, 2023 Background/purpose Real-time quantification of tissue perfusion can improve intraoperative surgical decision making. Here we demonstrate the utility of Laser Speckle Contrast Imaging as an intra-operative tool that quantifies real-time regional ...
Saloni Mehrotra +7 more
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Awake chronic mouse model of targeted pial vessel occlusion via photothrombosis [PDF]
, 2020 Animal models of stroke are used extensively to study the mechanisms involved in the acute and chronic phases of recovery following stroke. A translatable animal model that closely mimics the mechanisms of a human stroke is essential in understanding ...
Boas, David A. +9 more
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Time varied illumination laser speckle contrast imaging [PDF]
Optics Letters, 2021 Laser speckle contrast imaging is a technique to determine blood flow rate with a limitation of low dynamic range. In this Letter, we introduce a varied illumination speckle contrast imaging method. It utilizes varying illumination during exposure to customize the correlation time (flow rate) to speckle contrast relation.
Máté Siket +4 more
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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 +4 more
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Speckles in laser Doppler perfusion imaging [PDF]
Optics Letters, 2006 We report on the quantitative influence of speckles in laser Doppler perfusion imaging. The influence of speckles on the signal amplitude and on the Doppler spectrum is demonstrated experimentally for particle suspensions with different scattering levels and various beam widths.
Rajan, V. +3 more
openaire +2 more sources
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 +6 more
doaj +3 more sources
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 +1 more source
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 +3 more
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High-density speckle contrast optical tomography (SCOT) for three dimensional tomographic imaging of the small animal brain [PDF]
, 2017 High-density speckle contrast optical tomography (SCOT) utilizing tens of thousands of source-detector pairs, was developed for in vivo imaging of blood flow in small animals.
Culver, Joseph P +6 more
core +3 more sources