Results 41 to 50 of about 3,006,027 (287)

Studies of <i>in vivo</i> speckle contrast imaging based on an improved laser speckle imaging method. [PDF]

J Biomed Opt
Laser speckle contrast imaging (LSCI) is widely used for intraoperative blood flow monitoring, but traditional methods have limitations in imaging low blood flow velocities and small vessels. An improved LSCI method, termed the fluent imaging technique, is proposed to enhance imaging sensitivity and accuracy, providing real-time and high-resolution ...
Han G, Yang Q, Zeng R, Liu S, Wu Y, Chen R, Wang H, Zhang J.   +7 more
europepmc   +3 more sources

Material characterization by laser speckle photometry

, 2022
Paper 841315The damage and stress conditions of large industrial components have to be tested continuously. Especially welding processes in the field of coal production demand a nondestructive monitoring of internal stresses under an external load.
Cikalova, U., Schreiber, J., Bendjus, B.
core   +1 more source

Zwitterion-doped liquid crystal speckle reducers for immersive displays and vectorial imaging

Light: Science & Applications, 2023
Lasers possess many attractive features (e.g., high brightness, narrow linewidth, well-defined polarization) that make them the ideal illumination source for many different scientific and technological endeavors relating to imaging and the display of ...
Yihan Jin, Nathan P. Spiller, Chao He, Grahame Faulkner, Martin J. Booth, Steve J. Elston, Stephen M. Morris   +6 more
doaj   +1 more source

A new simulation method for laser speckle imaging to investigate hemodynamics [PDF]

E3S Web of Conferences, 2019
Speckle simulation is a powerful protocol to investigate the properties of speckle and evaluate image processing method. However, only static speckle images can be simulated by available methods without considering time-integrated effect of CCD.
Sang X, Li D, Chen B
doaj   +1 more source

Ear swelling test by using laser speckle imaging with a long exposure time [PDF]

, 2014
Laser speckle imaging with long exposure time has been applied noninvasively to visualize the immediate reaction of cutaneous vessels in mice in response to a known primary irritant and potential allergen-methyl salicylate.
Harmelin, Alon, Kuznetsov, Yuri, Meglinski, Igor, Kalchenko, Vyacheslav, Preise, Dina   +4 more
core   +1 more source

Laser speckle contrast imaging compared with indocyanine green in renal perfusion of a porcine model

Current Urology, 2023
. Background. When viewed under near-infrared light, indocyanine green (ICG) signal for kidney perfusion can be utilized in partial nephrectomy. Laser speckle contrast imaging (LSCI) uses coherent light to detect perfusion during real-time laparoscopic ...
Jonathan Noël, Anya Mascarenhas, Chibueze A. Nwaiwu, Yao Liu, Marcio Moschovas, Vasiliy E. Buharin, John Oberlin, Saloni Mehrotra, Alyson F. Dechert, Peter C. W. Kim, Vipul Patel   +10 more
doaj   +1 more source

Choosing a model for laser speckle contrast imaging

Biomedical Optics Express, 2021
Laser speckle contrast imaging (LSCI) is a real-time full-field non-invasive technique, which is broadly applied to visualize blood flow in biomedical applications. In its foundation is the link between the speckle contrast and dynamics of light scattering particles–erythrocytes. The mathematical form describing this relationship, which is critical for
Chang Liu, Kıvılcım Kılıç, Sefik Evren Erdener, David A. Boas, Dmitry D. Postnov   +4 more
openaire   +2 more sources

Coherent Matrix-Based Approach for Evaluation of First-Order Speckle Intensity Statistics and Its Application for Speckle Suppression

IEEE Photonics Journal, 2022
The existing approach for evaluating the statistical characteristics of speckle intensity distribution is applicable only to completely decorrelated laser beams.
Qiyong Xu, Anatoliy Lapchuk, Zichun Le, Di Cai, Jun Zhou, Zongshen Liu, Ivan Gorbov, Andriy Kryuchyn   +7 more
doaj   +1 more source

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, Dunn C, Bahani A, Crouzet C, Choi B.   +4 more
europepmc   +5 more sources

Investigation of speckle pattern dynamics by laser speckle contrast imaging [PDF]

, 2018
Laser speckle contrast imaging (LSCI) is a simple and quite powerful method for visualization of flow, microcirculation and perfusion. In current study the speckle contrast variations towards breaking ergodicity conditions are considered with a final aim
Bykov, Alexander, Anton Sdobnov, Alexander Bykov, Sdobnov, Anton, Igor A. Meglinski, Popov, Alexey; id_orcid, Alexey Popov, Meglinski, Igor, Popov, Alexey, Zherebtsov, Evgeny, Meglinski, Igor A., Tuchin, Valery V., Evgeny Zherebtsov   +12 more
core   +1 more source