Laser speckle contrast
The use of laser speckle contrast imaging in clinical applications
... Laser speckle contrast imaging (LSCI) is a useful device which is recruited for visualizing full-field microcirculatory ...The speckle pattern is produced as a consistent light illuminates a ...
7
Evaluation of microvascular endothelial function in patients with infective endocarditis using laser speckle contrast imaging and skin video capillaroscopy: research proposal of a case control prospective study
... and thus far, none have utilized laser speckle contrast imaging or functional skin video-capillaroscopy. Studies have shown microvascular changes in sepsis, in which abnormalities are found in early ...
6
Multi exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array
... Laser speckle contrast imaging (LSCI) is widely applied in blood flow measurements in the microcirculation ...to laser Doppler imaging (LDI) [2]-[5], LSCI does not provide a linear ...
6
Development of a non-contact torque transducer based on the laser speckle contrast method
... well-known laser speckle contrast ...so-called speckle; see Fig. 2. The speckle distribution varies with roughness as a function of phase ...
6
Retracted: A review of the clinical applications and performance of laser speckle contrast imaging
... a laser diode of low-power, a digital camera, a diffuser, and data analyzing ...it laser speckle contrast analysis (LASCA), and another name is laser speckle imaging ...
7
<p>Assessing Renal Microvascular Reactivity by Laser Speckle-Contrast Imaging in Angiotensin-II-Treated Mice</p>
... The cutaneous microcirculation is readily accessible and provides a powerful model to study human hypertension. Several vascular anatomical and physiological variables, however, differ between organs. Microcirculatory ...
7
Laser speckle contrast imaging for intraoperative assessment of liver microcirculation: a clinical pilot study
... introduces laser speckle contrast imaging (LSCI) as a new clinical method for assessing liver ...in laser speckle perfusion units, and intraindividual and interindividual variability in ...
5
Evaluation of a replanted finger and measuring its perfusion changes to predict its viability by laser speckle contrast imaging
... as laser Doppler flowmetry (LDF) and laser Doppler perfusion imaging (LDPI), have appeared to quantify and qualify this method for further ...unlike laser speckle contrast imaging ...
9
Non-invasive imaging of microcirculation: a technology review
... techniques, laser Doppler perfusion imaging, and laser speckle contrast ...Both laser Doppler perfusion imaging and laser speckle contrast imaging allow non-contact ...
8
A Hybrid De Noising Method on LASCA Images of Blood Vessels
... Laser speckle contrast imaging (LSCI) technique is a new modality to monitoring blood flow dynamics with high spatio-temporal ...[1]. Laser speckle contrast analysis (LASCA) is a ...
6
Babynina, Anastasia (2017): Bending and positioning of nanoparticles with light. Dissertation, LMU München: Fakultät für Physik
... nanosecond laser irradiation ...pulsed laser irradiation, the heating of gold nanorods can be divided into three ...(femtosecond-pulsed) laser irradiation is used, the gold nanorods stay in the ...
118
Light-scattering measurements of micro-deformations in granular materials
... A schematic of the experimental set-up is shown on figure 2. We use a Ventus continuous-wave linearly polarized laser of wavelength 532 nm and maximal power ∼ 50 mW. The beam emerging from the laser source ...
7
Laser contrast and other key parameters enhancing the laser conversion efficiency in ion acceleration regime
... in laser-plasma ion acceleration is the presence of a laser pedestal of amplified spontaneous emission (ASE) or laser prepulses to the main pulse, which affects the laser-solid and ...
6
Hydro Adsorption Study by Dynamic Laser Speckle of Natural Zeolite for Adsorbent and Fertilizer Applications
... He-Ne laser to illuminate the samples. Dynamic speckle pattern were recorded with a CCD camera connected to a frame grabber to digitize the images as shown in Figure ...
14
Verification of micro scale photogrammetry for smooth three dimensional object measurement
... the laser speckle system is that the object surface diffusely reflects the speckle pattern in order for the pattern to be observed on the objects ...the laser speckle pattern with the ...
13
Comparative Study on Speckle Noise Suppression Techniques for Ultrasound Images
... There are two thresholding functions frequently used, i.e. Hard threshold, Pan et al. [4], Soft threshold. Hard-thresholding function keeps the input if it is larger than the threshold; otherwise, it is set to zero. ...
6
Manipulation of magnetic nanoparticle retention and hemodynamic consequences in microcirculation: assessment by laser speckle imaging
... underneath. Laser speckle images (Flux) and photo images after each MNP dose or at the end of the experiment for prolonged (p) exposure in a representative rat are illustrated (A); continuous recordings of ...
11
A New Image Quality Metric using System Visual Human Characteristics
... Mathematically defined measures are still attractive because of two reasons. First, they are easy to calculate and usually have low computational complexity. Second, they are independent of viewing conditions and ...
5
First-order statistical speckle models improve robustness and reproducibility of contrast-enhanced ultrasound perfusion estimates
... specific contrast imaging, where the administration of microbubbles improves the visibility of focal liver lesions (such as metastatic tumors and hepatocellular carcinoma), and is increasingly being used for the ...
220
Study of Surface Roughness by Stylus Profilometer and Binary Laser Speckle B/D Counting Techniques
... With the digital image of speckle patterns the calculation of B/D ratio is performed using an image processing algorithm implemented in MATLAB. Images in grayscale should be converted in a binary image. For each ...
5