Results 11 to 20 of about 52,331 (304)

Changes in Speckle Tracking Echocardiography Values of the Descending Thoracic Aorta with Rising Positive End-Expiratory Pressure Levels. [PDF]

Medicina (Kaunas)
Background and Objectives: The aim of this study is to evaluate the changes in speckle tracking velocity vector analysis (VVI) values within the descending thoracic aorta (DTA) in patients with cardiogenic shock (CS) who are on mechanical ventilation (MV)
Martínez-Lechuga MB, Hidalgo-Martín J, Ramos Cuadra JÁ, Manetsberger J, Blanco-Serrano A, Todaro V, Heras-La-Calle G, Lerma MLL, Fernández-Guerrero JC, Ruiz-Bailén M.   +9 more
europepmc   +2 more sources

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, Suzane Garcia Ferreira, Marcelo Souto Nacif, Mario Luiz Ribeiro, Marcos Raimundo Gomes de Freitas, Cláudio Tinoco Mesquita   +5 more
doaj   +5 more sources

Speckle tracking ultrasonography as a new tool to assess diaphragmatic function: a feasibility study [PDF]

Ultrasonography, 2022
A reliable method of measuring diaphragmatic function at the bedside is still lacking. Widely used two-dimensional (2D) ultrasonographic measurements, such as diaphragm excursion, diaphragm thickness, and fractional thickening (FT) have failed to show ...
Sebastian Johannes Fritsch, Nima Hatam, Andreas Goetzenich, Gernot Marx, Rüdiger Autschbach, Leo Heunks, Johannes Bickenbach, Christian Simon Bruells   +7 more
doaj   +1 more source

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., Murray, Kevin T., Quiney, Harry M., Bajt, Saša, Chapman, Henry N.   +4 more
openaire   +7 more sources

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., Quiney, Harry M., Bajt, Saša, Chapman, Henry N.   +3 more
openaire   +7 more sources

Losing Track by Tracking Speckles [PDF]

JACC: Cardiovascular Imaging, 2018
No abstract available.
Pellicori, Pierpaolo, Cleland, John G.F., Clark, Andrew L.   +2 more
openaire   +4 more sources

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., Kotowski, Krzysztof, Tatam, Ralph P.   +2 more
openaire   +2 more sources

Accuracy of speckle tracking in the context of stress echocardiography in short axis view: An in vitro validation study. [PDF]

PLoS ONE, 2018
This study aimed to test the accuracy of a speckle tracking algorithm to assess myocardial deformation in a large range of heart rates and strain magnitudes compared to sonomicrometry.Using a tissue-mimicking phantom with cyclic radial deformation ...
Amir Hodzic, Boris Chayer, Diya Wang, Jonathan Porée, Guy Cloutier, Paul Milliez, Hervé Normand, Damien Garcia, Eric Saloux, Francois Tournoux   +9 more
doaj   +1 more source

Assessment of Right Ventricular Systolic Function with 3-Dimensional Speckle Tracking Echocardiography in Isolated Mild Mitral Stenosis

Anatolian Journal of Cardiology, 2023
Background: In rheumatic severe mitral stenosis, right ventricular mechanics deteriorate with the increasing severity of mitral stenosis. Therefore, we aimed to investigate right ventricular mechanics in patients with mild mitral stenosis using 3 ...
Esra Poyraz, Lale Dinç Asarcıklı, Tuğba Kemaloğlu Öz, Şennur Ünal Dayı   +3 more
doaj   +1 more source

The comparison of 2D and 3D speckle-tracking echocardiography values in young athletes

Спортивная медицина: наука и практика, 2020
Objective: to analyze the parameters of 2D and 3D transthoracic echocardiography (TEE) with speckle-tracking technology in young athletes. Materials and methods: 79 athletes (52 male, 27 female, median age 20,5±3,7 years) undergone prospective analysis ...
O. P. Mamaeva, N. E. Pavlova, A. M. Podlesov, A. A. Khilchuk, A. M. Sarana, S. G. Shcherbak   +5 more
doaj   +1 more source