Real-time laser speckle contrast imaging for intraoperative neurovascular blood flow assessment: animal experimental study. [PDF]
Sci RepKonovalov A +13 more
europepmc +3 more sources
Laser speckle contrast imaging system using nanosecond pulse laser source [PDF]
Journal of Biomedical Optics, 2020 Nanosecond-pulsed laser has proven to be used to obtain the velocity of blood using the speckle contrast method. Without the scanning time, it has potential for achieving fast two-dimensional blood flow images in a photoacoustic imaging system with the same pulsed laser.Our study aimed to evaluate the qualities of regional cerebral blood flow (rCBF ...
Zhao, Yuemei +5 more
openaire +2 more sources
IEEE Access, 2021 The speckle phenomenon produced by coherent waves interfering with each other is undesirable in laser imaging systems. For each of the laser speckle reduction methods in the literature, it is difficult to reduce speckle to an extremely low level (<
Jun Zhou +6 more
doaj +1 more source
Correction of overexposure in laser speckle contrast imaging
Optics Express, 2022 Laser speckle contrast imaging (LSCI) is a method to visualize and quantify tissue perfusion and blood flow. A common flaw in LSCI variants is their sensitivity to the optical setup parameters and that they operate well only on statistics of undistorted laser speckle patterns.
Péter Földesy +3 more
openaire +3 more sources
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
Ultrasound-modulated optical tomography of biological tissue by use of contrast of laser speckles [PDF]
, 2002 Ultrasound-modulated optical tomography based on the measurement of laser-speckle contrast was investigated. An ultrasonic beam was focused into a biological-tissue sample to modulate the laser light passing through the ultrasonic column inside the ...
Ku, Geng, Li, Jun, Wang, Lihong V.
core +1 more source
Handheld laser speckle contrast perfusion imaging [PDF]
, 2021 Laser speckle contrast imaging (LSCI) is a noninvasive method for evaluation of microcirculatory blood flow. LSCI has a broad medical application such as reconstructive surgery, burns and dermatology. Commercially available LSCI systems are bulky and operate in mounted modality.
openaire +1 more source
High-density speckle contrast optical tomography (SCOT) for three dimensional tomographic imaging of the small animal brain [PDF]
, 2017 High-density speckle contrast optical tomography (SCOT) utilizing tens of thousands of source-detector pairs, was developed for in vivo imaging of blood flow in small animals.
Culver, Joseph P +6 more
core +3 more sources
Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array [PDF]
, 2015 A system has been developed in which multi-exposure Laser Speckle Contrast Imaging (LSCI) is implemented using a high frame rate CMOS imaging sensor chip. Processing is performed using a Field Programmable Gate Array (FPGA).
Hayes-Gill, Barrie R. +4 more
core +2 more sources
Comparison of laser Doppler and laser speckle contrast imaging using a concurrent processing system [PDF]
, 2016 Full field laser Doppler imaging (LDI) and single exposure laser speckle contrast imaging (LSCI) are directly compared using a novel instrument which can concurrently image blood flow using both LDI and LSCI signal processing.
Armitage +34 more
core +2 more sources