Results 21 to 30 of about 2,833,014 (274)

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, Jiang J, Liu X, Xu Y, Hu J, Li Z.   +5 more
europepmc   +4 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, G.O. Lopes, V. Verri, M.P. Coelho, P.M.C. Nascimento, D.A. Kopiler, E. Tibirica   +6 more
doaj   +3 more sources

Improving Contrast Accuracy and Resolution of Laser Speckle Contrast Imaging Using Two-Dimensional Entropy Algorithm

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

Choosing a laser for laser speckle contrast imaging [PDF]

Scientific Reports, 2019
AbstractThe use of laser speckle contrast imaging (LSCI) has expanded rapidly for characterizing the motion of scattering particles. Speckle contrast is related to the dynamics of the scattering particles via a temporal autocorrelation function, but the quality of various elements of the imaging system can adversely affect the quality of the signal ...
Dmitry D. Postnov, Xiaojun Cheng, Sefik Evren Erdener, David A. Boas   +3 more
openaire   +4 more sources

Enhancing laser speckle reduction by decreasing the pitch of a chiral nematic liquid crystal diffuser

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, Yihan Jin, Steve J. Elston, Stephen M. Morris   +3 more
doaj   +1 more source

Laser Speckle Modeling and Simulation for Biophysical Dynamics: Influence of Sample Statistics

Journal of Biomedical Photonics & Engineering, 2017
Laser speckle is a statistical phenomenon and should be treated as such when establishing experimental parameters for using laser speckle techniques to infer information about the dynamics of a coherently illuminated medium, such as biological tissue ...
Kosar Khaksari, Sean J. Kirkpatrick
doaj   +1 more source

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

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

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