Results 181 to 190 of about 18,237 (226)

Speckle Mitigation for Optical Tracking

2020 IEEE Aerospace Conference, 2020
Optical tracking systems encounter a number of challenges, including turbulence and speckle. Atmospheric turbulence causes phase perturbations that distort the track imagery. Additionally, natural illumination of the object is sometimes insufficient, and the tracking system must illuminate the object with a laser.
Helena C. Franklin, Noah R. Van Zandt
openaire   +1 more source

Speckle tracking echocardiography in cardiac amyloidosis

Heart Failure Reviews, 2019
Speckle tracking echocardiography is an imaging method, based on analysis of 2D echocardiographic images, that is useful in providing information on tissue deformation in different cardiac diseases. Cardiac amyloidosis is a complex pathological entity that can be confused with other causes responsible for cardiac hypertrophy, and for this reason, it ...
Stricagnoli, Mario, Cameli, Matteo, Incampo, Eufemia, Lunghetti, Stefano, Mondillo, Sergio   +4 more
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Myocardial strain: speckle tracking or early disease tracking?

Acta Cardiologica, 2021
Inflammation and autoimmunity related ischaemic and nonischemic complications can occur in Behcet’s syndrome and can cause coronary vasculitis, myocarditis, aortic regurgitation and root dilatation...
L Elif, Sade, Ali, Akdogan
openaire   +2 more sources

Lateral speckle tracking using synthetic lateral phase

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2004
In traditional speckle tracking, lateral displacement (perpendicular to the beam direction) estimates are much less accurate than axial ones (along the beam direction). The accuracy of lateral tracking is very important whenever spatial derivatives of both axial and lateral displacements are required to give a full description of a two-dimensional (2-D)
Xunchang, Chen, Marwa J, Zohdy, Stanislav Y, Emelianov, Matthew, O'Donell   +3 more
openaire   +2 more sources

[Speckle tracking echocardiography: a practical guide].

Giornale italiano di cardiologia (2006), 2017
Speckle tracking echocardiography (STE) has recently emerged as a quantitative technique to accurately estimate myocardial function. By the analysis of the motion of speckles in the two-dimensional ultrasonic image, this technique allows a non-Doppler angle-independent objective analysis of myocardial deformation, with the possibility to quantify ...
Cameli, Matteo, Mondillo, Sergio, GALDERISI, MAURIZIO, Mandoli, Giulia Elena, Ballo, Piercarlo, Nistri, Stefano, Capo, Verdiana, D'Ascenzi, Flavio, D'Andrea, Antonello, ESPOSITO, roberta, Gallina, Sabina, Montisci, Roberta, Novo, Giuseppina, Rossi, Andrea, Mele, Donato, Agricola, Eustachio   +15 more
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Speckle-tracking imaging for pre-excitation cardiomyopathy

Acta Cardiologica, 2020
An 8-year-old girl presented to our hospital with chest tightness, fatigue, and discomfort after exercise. A radiograph indicated a large heart shadow.
Shuai Zhang, Xinjian He, Gaoyang Li, Di Fan   +3 more
openaire   +2 more sources

Speckle tracking basics

2019
Recording of presentation given by John Lawrenson with the title 'Speckle tracking basics', presented on Thursday, 14 March 2019 as part of the Inaugural PROTEA (Partnerships for Children with Heart Disease in Africa) Workshop in Cape Town, South Africa.The 13th-16th March 2019 marked the Inaugural PROTEA (Partnerships for Children with Heart Disease ...
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Speckle Tracking Echocardiography

2011
Questo libro tratta le nuove metodiche ecocardiografiche in particolare la metodica Speckle tracking. Il test è ampiamente illustrato e presenta casistica esplicativa relativa alla utilitià clininica di questa nuova metodica eco.
Badano L, Galderisi M, Muraru, D, Mondillo, S   +3 more
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Techniques for speckle tracking: block matching

2018
The clinical need for in vivo motion and deformation quantification and the many applications have been clearly explained in the previous chapters. In general, we distinguish between (1) quasi-static elastography: speckle tracking during compression or palpation of tissue to estimate local strains and elasticity and (2) dynamic elastography, where ...
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Two dimensional speckle tracking echocardiography: clinical applications

Heart, 2010
This review is the second of two articles that focus on two dimensional speckle tracking echocardiography (STE). While the first article described the principles of STE, this review deals with its potential clinical applications. The technology of speckle tracking based strain analysis is rather new.w1 w2 However, there is considerable experience with ...
Hermann, Blessberger, Thomas, Binder
openaire   +2 more sources