Results 71 to 80 of about 7,366,248 (260)

Speckle-Tracking echocardiography to assess global and regional left ventricular function in acute myocardial infarction

Journal of the Indian Academy of Echocardiography & Cardiovascular Imaging, 2017
Speckle tracking is a useful tool in assessing global & regional myocardial function in patients with acute myocardial infarction undergoing primary PCI.
Gopi Aniyathodiyil, Sunil S Bohra, Anup Mottengar, Satish C Govind   +3 more
doaj   +1 more source

2D speckle-tracking assessment of left ventricular myocardial strain in healthy children and adolescents

Медицинский совет, 2020
Introduction.To determine the relevant indicators of strain and strain rate of the left ventricular myocardium in children and adolescents.Materials and methods. Have been examined 67 patients form aged from 7 up to 17 years old. 1-st group – 30 children
N. Yu. Chernykh, A. A. Tarasova, O. S. Groznova   +2 more
doaj   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

Advanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig, Michael Werner, Christian Rotsch   +2 more
wiley   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji, Natasha Sacks, Johannes Pötschke, Björn Matthey   +3 more
wiley   +1 more source

Number of individuals in each sub-sample in whom strain parameters could be derived.

, 2019
GL-PSS = global longitudinal peak systolic strain, GL-SSR = global longitudinal systolic strain rate, GL-EDSR = global longitudinal early diastolic strain rate, and GL-LDSR = global longitudinal late diastolic strain rate.
Götz Gelbrich (326789), Peter U. Heuschmann (7378034), Theresa Tiffe (4569676), Dan Liu (108669), Martin Wagner (72668), Stefan Störk (387055), Bettina N. Walter (7378028), Margret Breunig (7378031), Caroline Morbach (387058)   +8 more
core   +1 more source

Is Left Ventricular Global Longitudinal Strain by Two-Dimensional Speckle Tracking Echocardiography in Sepsis Cardiomyopathy Ready for Prime Time Use in the ICU? [PDF]

, 2019
Myocardial deformation imaging (strain imaging) is a technique to directly quantify the extent of myocardial contractility and overcomes several of the limitations of ejection fraction.
Rahul Pidikiti, Venu Madhav Velagapudi, Dennis A. Tighe   +2 more
core   +2 more sources

Prognostic Value of left ventricular peak Global Longitudinal Strain after Mitral Valve Surgery in Patients with Primary Severe Mitral Regurge [PDF]

Zagazig University Medical Journal
Background: Assessment of Preclinical systolic dysfunction using global longitudinal strain, a unique and sensitive technique for diagnosing left ventricular dysfuction.
Mohamad Hussein, Ahmed Ammar, Mohammad Al-Daydamony, Ahmed Abdel Fattah, Mohamed Mohamed   +4 more
doaj   +1 more source

Thermal Cycle–Microstructure–Property Relationships in Rail Steel Heat‐Affected Zone Simulated by Gleeble

Advanced Engineering Materials, EarlyView.
Microstructural evolution of premium rail steel during flash butt welding (FBW), comparing physically simulated heat‐affected zones with actual weld regions. Thermal cycles induce phase transformations and microstructural heterogeneity that influence weld quality and mechanical performance. These findings provide insights into optimizing FBW parameters
Emmanoelle Cintra da Cunha Araújo, João Marcos da Silva Nunes, Marcelly Cristiny Nunes de Carvalho, Alex Rojas, Cristie Luis Kugelmeier, Cristhian Ricardo Loayza Loayza, João Carlos Ferreira, Maria Veronica Goncalves Rodrigues, Rute Sayuri Kano, Isaac Araújo Furtado, Jacyara Dalylla da Silva Nunes, Jhonatan Peres de Sousa, Marcos Natan da Silva Lima, Eden Santos Silva, Gedeon Silva Reis, Samuel Filgueiras Rodrigues   +15 more
wiley   +1 more source

Prediction of all-cause mortality from global longitudinal speckle strain: Comparison with ejection fraction and wall motion scoring

, 2009
Background-Although global left ventricular systolic function is an important determinant of mortality, standard measures such as ejection fraction (EF) and wall motion score index (WMSI) have important technical limitations. The aim of this study was to
Leano, R, Stanton, T, Marwick, TH
core   +1 more source

Microstructural, Mechanical, and Textural Evolution of Dissimilar Combination of Laser‐Welded Maraging Steel and 4340 Steel

Advanced Engineering Materials, EarlyView.
The present work reports the microstructural, mechanical, and texture evolution of a dissimilar combination laser‐welded maraging steel with 4340 steel. This is important for aerospace applications. The demand for dissimilar welding is growing rapidly with the requirement of efficient and durable joints.
Bharat Behl, Yu Dong, Alokesh Pramanik, Tapas Kumar Bandyopadhyay   +3 more
wiley   +1 more source