Results 31 to 40 of about 3,006,027 (287)
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
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
doaj +1 more source
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
doaj +1 more source
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
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 +3 more
openaire +4 more sources
, 2022 MATLAB functions for calculating spatial and temporal speckle contrast for performing laser speckle contrast imaging.
Colin Sullender
core +1 more source
Quantitative modeling of laser speckle imaging [PDF]
Optics Letters, 2006 We have analyzed the image formation and dynamic properties in laser speckle imaging (LSI) both experimentally and with Monte-Carlo simulation. We show for the case of a liquid inclusion that the spatial resolution and the signal itself are both significantly affected by scattering from the turbid environment.
Zakharov, Pavel +4 more
openaire +5 more sources
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
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