Results 11 to 20 of about 18,237 (226)
Speckle Tracking and Transthyretin Amyloid Cardiomyopathy
Arquivos Brasileiros de Cardiologia, 2016 Background: Amyloidosis is a disease caused by deposits of insoluble fibrils in extracellular spaces. The most common type of familial amyloidosis is mediated by mutation of transthyretin, especially Val30Met.
Alexandre Marins Rocha +5 more
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speckle-tracking: a software suite for ptychographic X-ray speckle tracking [PDF]
Journal of Applied Crystallography, 2020 In recent years, X-ray speckle-tracking techniques have emerged as viable tools for wavefront metrology and sample imaging applications. These methods are based on the measurement of near-field images. Thanks to their simple experimental setup, high angular sensitivity and compatibility with low-coherence sources, these methods have been actively ...
Morgan, Andrew J. +4 more
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Ptychographic X-ray speckle tracking [PDF]
Journal of Applied Crystallography, 2020 A method is presented for the measurement of the phase gradient of a wavefront by tracking the relative motion of speckles in projection holograms as a sample is scanned across the wavefront. By removing the need to obtain an undistorted reference image of the sample, this method is suitable for the metrology of highly divergent wavefields.
Morgan, Andrew J. +3 more
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Losing Track by Tracking Speckles [PDF]
JACC: Cardiovascular Imaging, 2018 No abstract available.
Pellicori, Pierpaolo +2 more
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Speckle tracking approaches in speckle sensing [PDF]
SPIE Proceedings, 2017 This paper reports some initial investigations into the application of feature tracking algorithms as an alternative data processing method for speckle correlation sensors capable of determining both the speckle pattern translation and rotation. The accuracy of translation measurements using the feature tracking approach was found to be similar to that
Charrett, Thomas O. H. +2 more
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IEEE Photonics Journal, 2019 Target tracking and imaging through scattering media are challenges that must be overcome for important applications in various fields. The fundamental problem is the randomly diffused light in scattering media that prevents the formation of diffraction ...
Yingbo Wang +5 more
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MODERN POSSIBILITIES OF SPECKLE TRACKING ECHOCARDIOGRAPHY IN CLINICAL PRACTICE
Рациональная фармакотерапия в кардиологии, 2017 Speckle-tracking echocardiography is promising modern technique for evaluation of structural and functional changes in the myocardium. It evaluates the indicator of global longitudinal myocardial deformation, which is more sensitive than ejection ...
V. S. Nikiforov, I. V. Nikishchenkova
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Future Science OA, 2019 Aim: To use 2D speckle-tracking echocardiography, and conventional and tissue Doppler echocardiography to detect subclinical left ventricular myocardial dysfunction in patients with rheumatoid arthritis (RA).
Fabiola Atzeni +5 more
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Critical Care, 2023 Introduction The speckle tracking ultrasound is an innovative technology enabling distinct assessment of diaphragmatic movement, yet the relative data are scarce.
Daozheng Huang +7 more
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X-ray multi-modal intrinsic-speckle-tracking [PDF]
Journal of Optics, 2020 Abstract We develop x-ray multi-modal intrinsic-speckle-tracking (MIST), a form of x-ray speckle-tracking that is able to recover both the position-dependent phase shift and the position-dependent small-angle x-ray scattering (SAXS) signal of a phase object. MIST is based on combining a Fokker–Planck description of paraxial x-ray optics,
Konstantin M Pavlov +5 more
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