Results 41 to 50 of about 3,214,745 (368)
Direct characterization of tissue dynamics with laser speckle contrast imaging.
Biomedical Optics Express, 2022 Laser speckle contrast imaging (LSCI) has gained broad appeal as a technique to monitor tissue dynamics (broadly defined to include blood flow dynamics), in part because of its remarkable simplicity.
Shuqi Zheng, J. Mertz
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High-Resolution Scanning Coded-Mask-Based X-ray Multi-Contrast Imaging and Tomography
Journal of Imaging, 2021 Near-field X-ray speckle tracking has been used in phase-contrast imaging and tomography as an emerging technique, providing higher contrast images than traditional absorption radiography.
Zhi Qiao +3 more
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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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Reproducibility and normalization of reactive hyperemia using laser speckle contrast imaging
PLoS ONE, 2021 Background Impaired perfusion indices signal potential microvascular dysfunction preceding atherosclerosis and other cardiometabolic pathologies. Post-occlusive reactive hyperemia (PORH), a vasodilatory response following a mechanically induced ischemia,
B. Shirazi, R. Valentine, J. Lang
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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
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Photonics, 2021 Speckle-free imaging using a multimode fiber has been widely used for imaging systems. Generally, previous work has assumed that all the propagating modes of the fiber are uniformly excited, but the modal power distribution is actually affected by ...
Jun Zhou +8 more
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Real-time visualization of renal microperfusion using laser speckle contrast imaging
Journal of Biomedical Optics, 2021 . Significance: Intraoperative parameters of renal cortical microperfusion (RCM) have been associated with postoperative ischemia/reperfusion injury.
W. Heeman +6 more
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High-contrast, speckle-free, true 3D holography via binary CGH optimization [PDF]
Scientific Reports, 2022 Holography is a promising approach to implement the three-dimensional (3D) projection beyond the present two-dimensional technology. True 3D holography requires abilities of arbitrary 3D volume projection with high-axial resolution and independent ...
Byounghyo Lee +4 more
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Effect of Phase Relations on Speckle Pattern: Simulation and Measurement
IEEE Photonics Journal, 2019 Speckle is an important phenomenon in various applications. It can be quantified by speckle contrast. However, at present, the influence of the phase relations among the various wavelengths on speckle contrast is rarely analyzed theoretically.
Linlu He +5 more
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Skin research and technology, 2021 Skin microvasculature changes are crucial in psoriasis development and correlate with perfusion. The noninvasive Handheld Perfusion Imager (HAPI) examines microvascular skin perfusion in large body areas using laser speckle contrast imaging (LSCI).
Mirjam J Schaap +7 more
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