Results 61 to 70 of about 13,509 (286)

Speckle Theory for Arbitrary Wavefront Illumination in Free-Space Surface Scattering

IEEE Photonics Journal
Speckle has been shown to cause significant degradation to the imaging quality of laser imaging systems. However, in certain complex imaging environments, it can also act as an effective information carrier.
Qiyong Xu, Janan Zhou, Yipeng Mo, Zichun Le   +3 more
doaj   +1 more source

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

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   +1 more source

Laser speckle reduction using polymer-stabilized liquid crystals doped with Ag nanowires

Heliyon, 2023
Miniaturized and pure static devices are expected to be used in laser-imaging systems for speckle reduction. In this study, a pure static device based on polymer-stabilized liquid crystal (PSLC) doped with Ag nanowires was developed to effectively ...
Xin Jiang, Weilong Zhou, Wei Wang, Zichun Le, Wen Dong   +4 more
doaj   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

Confocal laser speckle time-autocorrelation imaging with adaptive orientation spatial windows

Journal of Innovative Optical Health Sciences
Conventional laser speckle contrast imaging (LSCI) suffers from static scattering and limited quantitative accuracy. To overcome these issues, we previously developed confocal laser speckle contrast imaging (CLSCI) and confocal laser speckle ...
E. Du, Haohan Zheng, Honghui He, Zhipeng Huang, Weizu Zhang, Shiguo Li, Weifeng Zhang, Guoqing Wang, Yuan Zhou, Tingxue Xin, Shuhao Shen   +10 more
doaj   +1 more source

Vessel packaging effect in laser speckle contrast imaging and laser Doppler imaging [PDF]

Journal of Biomedical Optics, 2017
Laser speckle-based techniques are frequently used to assess microcirculatory blood flow. Perfusion estimates are calculated either by analyzing the speckle fluctuations over time as in laser Doppler flowmetry (LDF), or by analyzing the speckle contrast as in laser speckle contrast imaging (LSCI).
Ingemar, Fredriksson, Marcus, Larsson
openaire   +2 more sources

Surface strain measurement using pulsed laser shearography with fibre-optic imaging bundles [PDF]

, 2008
This thesis describes the development of a shearography instrument for the quantitative measurement of surface strain on dynamic test objects. Shearography is a non-contact, full-field interferometric speckle technique used for the measurement of ...
Francis, Daniel
core  

Laser speckle contrast imaging of abdominal organs in mouse model [PDF]

, 2019
Diagnosis and treatment of acute destructive pancreatitis is one of the most urgent problems of abdominal surgery. To obtain additional diagnostic information about the microcirculation state and metabolic processes, various imaging techniques are widely
Gennadii Piavchenko, Andrey Dunaev, Andrian Mamoshin, Dremin, V. (Viktor), Piavchenko, Gennadii, Kozlov, I. (Igor), Mamoshin, Andrian, Dunaev, A. (Andrey), Olga Stelmashchuk, Mezentsev, M. (Mikhail), Stelmashchuk, Olga, Piavchenko, G. (Gennadii), Mamoshin, A. (Andrian), Kozlov, Igor, Seryogina, E. (Evgenya), Anton Sdobnov, Viktor Dremin, Sdobnov, Anton, Stelmashchuk, O. (Olga), Seryogina, Evgenya, Dunaev, Andrey, Mezentsev, Mikhail, Mikhail Mezentsev, Igor Kozlov, Sdobnov, A. (Anton), Evgeniya Seryogina, Dremin, Viktor   +26 more
core   +1 more source

Imaging retinal blood flow with laser speckle flowmetry [PDF]

Frontiers in Neuroenergetics, 2010
Laser speckle flowmetry (LSF) was initially developed to measure blood flow in the retina. More recently, its primary application has been to image baseline blood flow and activity-dependent changes in blood flow in the brain. We now describe experiments in the rat retina in which LSF was used in conjunction with confocal microscopy to monitor light ...
Srienc, Anja I., Kurth-Nelson, Zeb L., Newman, Eric A.   +2 more
openaire   +2 more sources