Results 61 to 70 of about 234,282 (231)
Synchronized renal blood flow dynamics mapped with wavelet analysis of laser speckle flowmetry data. [PDF]
PLoS ONE, 2014 Full-field laser speckle microscopy provides real-time imaging of superficial blood flow rate. Here we apply continuous wavelet transform to time series of speckle-estimated blood flow from each pixel of the images to map synchronous patterns in ...
Alexey R Brazhe +3 more
doaj +1 more source
A narrow-band speckle-free light source via random Raman lasing
, 2015 Currently, no light source exists which is both narrow-band and speckle-free with sufficient brightness for full-field imaging applications. Light emitting diodes (LEDs) are excellent spatially incoherent sources, but are tens of nanometers broad. Lasers
Bixler, Joel N. +10 more
core +1 more source
State-of-the art of acousto-optic sensing and imaging of turbid media [PDF]
, 2012 Acousto-optic (AO) is an emerging hybrid technique for measuring optical contrast in turbid media using coherent light and ultrasound (US). A turbid object is illuminated with a coherent light source leading to speckle formation in the remitted light ...
Boccara, A.C. +2 more
core +4 more sources
Biomedical Optics Express, 2023 Dynamic light scattering (DLS) and laser speckle contrast imaging (LSCI) are closely related techniques that exploit the statistics of speckle patterns, which can be utilized to measure cerebral blood flow (CBF).
Bingxue Liu +3 more
semanticscholar +1 more source
Light-Sheet Laser Speckle Imaging
, 2022 Abstract Laser speckle imaging (LSI) as a label-free flow mapping technique has numerous potential clinical applications and plays an increasingly important role in translational medicine. Conventional LSI, however, is limited to qualitative flow change assessment and two-dimensional topographic imaging.
Kai Long +6 more
openaire +1 more source
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 +4 more
doaj +1 more source
Laser Doppler holographic microscopy in transmission: application to fish embryo imaging [PDF]
, 2014 We have extended Laser Doppler holographic microscopy to transmission geometry. The technique is validated with living fish embryos imaged by a modified upright bio-microcope.
Alexandre, Daniel +2 more
core +3 more sources
Speckle Theory for Arbitrary Wavefront Illumination in Free-Space Surface Scattering
IEEE Photonics JournalSpeckle 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 +3 more
doaj +1 more source
Light Focusing and Two-Dimensional Imaging Through Scattering Media using the Photoacoustic Transmission-Matrix with an Ultrasound Array [PDF]
, 2014 We implement the photoacoustic transmission-matrix approach on a two-dimensional photoacoustic imaging system, using a 15 MHz linear ultrasound array.
Bossy, Emmanuel +4 more
core +2 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