Results 61 to 70 of about 25,478 (173)
Single molecule imaging with longer x-ray laser pulses [PDF]
, 2015 During the last five years, serial femtosecond crystallography using x-ray laser pulses has developed into a powerful technique for determining the atomic structures of protein molecules from micrometer and sub-micrometer sized crystals.
Caleman, Carl +4 more
core +4 more sources
Laser speckle contrast imaging is sensitive to advective flux
Journal of Biomedical Optics, 2016 Unlike laser Doppler flowmetry, there has yet to be presented a clear description of the physical variables that laser speckle contrast imaging (LSCI) is sensitive to. Herein, we present a theoretical basis for demonstrating that LSCI is sensitive to total flux and, in particular, the summation of diffusive flux and advective flux.
Kosar, Khaksari, Sean J, Kirkpatrick
openaire +2 more sources
Laser Speckle Contrast Imaging of Cerebral Blood Flow [PDF]
Annals of Biomedical Engineering, 2011 Laser speckle contrast imaging (LSCI) has emerged over the past decade as a powerful, yet simple, method for imaging of blood flow dynamics in real time. The rapid adoption of LSCI for physiological studies is due to the relative ease and low cost of building an instrument as well as the ability to quantify blood flow changes with excellent spatial and
openaire +2 more sources
Reproducibility and normalization of reactive hyperemia using laser speckle contrast imaging.
PLoS ONE, 2021 BackgroundImpaired perfusion indices signal potential microvascular dysfunction preceding atherosclerosis and other cardiometabolic pathologies. Post-occlusive reactive hyperemia (PORH), a vasodilatory response following a mechanically induced ischemia ...
Behnia Rezazadeh Shirazi +2 more
doaj +1 more source
Capillaroscopy in 2016 : new perspectives in systemic sclerosis [PDF]
, 2016 Systemic sclerosis (SSc) is an autoimmune disorder of unknown etiology characterized by early impairment of the microvascular system. Nailfold microangiopathy and decreased peripheral blood perfusion are typical clinical aspects of SSc.
Cutolo, M +6 more
core +1 more source
, 2013 The constituents of soft matter systems such as colloidal suspensions, emulsions, polymers, and biological tissues undergo microscopic random motion, due to thermal energy.
Brambilla, Giovanni +3 more
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Sensors, 2017 Laser speckle contrast imaging (LSCI) has been widely used to determine blood flow and perfusion in biological tissues. The physical model of traditional LSCI ignores the effects of scattering property distribution in relation to speckle correlation time
Lingke Zhang +6 more
doaj +1 more source
Micromachines, 2022 Microvasculature analysis in biomedical images is essential in the medical area to evaluate diseases by extracting properties of blood vessels, such as relative blood flow or morphological measurements such as diameter.
Eduardo Morales-Vargas +4 more
doaj +1 more source
Differential intensity contrast swept source optical coherence tomography for human retinal vasculature visualization [PDF]
, 2012 We demonstrate an intensity-based motion sensitive method, called differential logarithmic intensity variance (DLOGIV), for 3D microvasculature imaging and foveal avascular zone (FAZ) visualization in the in vivo human retina using swept source optical ...
Fraser, Scott, Motaghiannezam, Reza
core +1 more source
In vivo laser Doppler holography of the human retina
, 2018 The eye offers a unique opportunity for non-invasive exploration of cardiovascular diseases. Optical angiography in the retina requires sensitive measurements, which hinders conventional full-field laser Doppler imaging schemes.
Atlan, M. +4 more
core +1 more source