Results 21 to 30 of about 20,605,475 (335)
Cardiovascular Ultrasound, 2022 Background Echo-Particle Image Velocimetry (echoPIV) tracks speckle patterns from ultrasound contrast agent(UCA), being less angle-sensitive than colour Doppler.
Mihai Strachinaru +9 more
doaj +1 more source
Shear Wave Elastography Implementation on a Portable Research Ultrasound System: Initial Results
Applied Sciences, 2022 Ultrasound shear wave elastography (SWE) has emerged as a promising technique that enables the quantitative estimation of soft tissue stiffness. However, its practical implementation is complicated and presents a number of engineering challenges ...
Damian Cacko, Marcin Lewandowski
doaj +1 more source
JACC Cardiovascular Imaging, 2020 OBJECTIVES The purpose of this study was to investigate whether propagation velocities of naturally occurring shear waves (SWs) at mitral valve closure (MVC) increase with the degree of diffuse myocardial injury (DMI) and with invasively determined LV ...
A. Petrescu +14 more
semanticscholar +1 more source
High frame rate emission spectroscopy for ablation tests in plasma wind tunnel
, 2021 This article describes a novel high frame rate emission spectroscopy setup developed for measurements in high enthalpy flow fields. The optical setup and the associated hardware arrangements are described in detail followed by test case data to ...
Ludovic Ferrière +13 more
core +1 more source
Light Yield Response of Neutron Scintillation Screens to Sudden Flux Changes
Journal of Imaging, 2020 We performed a study of the initial and long term light yield of different scintillation screen mixtures for neutron imaging during constant neutron irradiation.
Tobias Neuwirth +3 more
doaj +1 more source
Video-rate or high-precision: A flexible range imaging camera [PDF]
, 2008 A range imaging camera produces an output similar to a digital photograph, but every pixel in the image contains distance information as well as intensity.
Dorrington, Adrian A. +13 more
core +1 more source
High-Frame-Rate Volumetric Porcine Renal Vasculature Imaging
Ultrasound in Medicine & Biology, 2023 The aim of this study was to assess the feasibility and imaging options of contrast-enhanced volumetric ultrasound kidney vasculature imaging in a porcine model using a prototype sparse spiral array.Transcutaneous freehand in vivo imaging of two healthy porcine kidneys was performed according to three protocols with different microbubble concentrations
Wei, Luxi +12 more
openaire +6 more sources
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2020 One of the current challenges in ultrasound imaging is achieving higher frame rates, particularly in cardiac applications, where tracking the heart motion and other rapid events can provide potential valuable diagnostic information.
G. Matrone +4 more
semanticscholar +1 more source
A reconfigurable real-time compressive-sampling camera for biological applications. [PDF]
PLoS ONE, 2011 Many applications in biology, such as long-term functional imaging of neural and cardiac systems, require continuous high-speed imaging. This is typically not possible, however, using commercially available systems.
Bo Fu, Mark C Pitter, Noah A Russell
doaj +1 more source
High frame rate ultrasound imaging using parallel beamforming [PDF]
, 2009 The human heart contracts and relaxes approximately once each second. This is a complex process where different parts of the cardiac tissue contract and relax at different times and at different rates.
Bjåstad, Tore Grüner
core +1 more source