Results 261 to 270 of about 20,605,475 (335)

High-frame-rate Volumetric Porcine Cardiac Imaging

open access: yes2023 IEEE International Ultrasonics Symposium (IUS), 2023
Volumetric echocardiography can potentially give a more complete picture of cardiac dynamics than its two-dimensional (2D) counterpart. Current clinical volumetric imaging probes have relatively low frame rates, and often require ECG gating to stitch together an entire volume.
Wei, Luxi   +13 more
core   +4 more sources

High Frame-Rate, High Resolution Ultrasound Imaging With Multi-Line Transmission and Filtered-Delay Multiply And Sum Beamforming [PDF]

open access: yesIEEE Transactions on Medical Imaging, 2017
Multi-Line Transmission (MLT) was recently demonstrated as a valuable tool to increase the frame rate of ultrasound images. In this approach, the multiple beams that are simultaneously transmitted may determine cross-talk artifacts that are typically ...
Alessandro Stuart Savoia   +2 more
exaly   +3 more sources

High Frame-Rate Imaging Using Swarm of UAV-Borne Radars

IEEE Transactions on Geoscience and Remote Sensing
High frame-rate imaging of synthetic aperture radar (SAR), known as video SAR, has received much research interest these years. It usually operates at extremely high frequency and even THz band as a technical tradeoff between high frame rate and high ...
Zhong Xu, Jinshan Ding, Xuejun Huang
exaly   +2 more sources

A composite high-frame-rate system for clinical cardiovascular imaging

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2008
High frame-rate ultrasound RF data acquisition has been proved to be critical for novel cardiovascular imaging techniques, such as high-precision myocardial elastography, pulse wave imaging (PWI), and electromechanical wave imaging (EWI). To overcome the frame-rate limitations on standard clinical ultrasound systems, we developed an automated method ...
Luo, J   +4 more
openaire   +5 more sources

Speckle noise reduction for high-frame-rate imaging

2017 IEEE International Ultrasonics Symposium (IUS), 2017
The high-frame-rate (HFR) imaging method was developed in the 1990s. Recently, this method has found many applications such as supersonic imaging, elasticity imaging, velocity vector imaging, strain and strain rate imaging, cardiac imaging, and functional imaging.
Jian-yu Lu
semanticscholar   +3 more sources

Phase modulation beamforming in high frame rate imaging

2019 IEEE International Ultrasonics Symposium (IUS), 2019
While high frame imaging is enabled through the use of unfocused transmit events, images formed from these transmit events have inferior resolution and elevated acoustic clutter relative to images formed with focused transmit beams, even when angular compounding is applied.
Brooks D. Lindsey, Bowen Jing
openaire   +2 more sources

High frame rate ultrasound displacement vector imaging

open access: yes2014 IEEE International Ultrasonics Symposium, 2014
The tissue displacement vector obtained with high frame-rate imaging may provide valuable diagnostic information. Measuring 2D displacements caused by rapid dynamic processes, such as arterial pulse waves or shear waves, requires inter-frame displacement precision in the micrometer range.
Kruizinga, Pieter   +5 more
openaire   +2 more sources

Complex pulsing schemes for high frame rate imaging

open access: yes2002 IEEE Ultrasonics Symposium, 2002. Proceedings., 2003
High frame rate ultrasound imaging can be achieved by simultaneous transmission of multiple focused beams along different directions. However, image quality degrades by the interference among beams. An alternative approach is to transmit spherical waves of a basic short pulse with frequency coding and a constant transmit delay from channel to channel ...
T. Misaridis, M. Fink, J.A. Jensen
openaire   +2 more sources

High Frame Rate Ultrasound Imaging by Means of Tensor Completion: Application to Echocardiography

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2022
High frame rate ultrasound (US) imaging enables the monitoring of fast-moving organs. In echocardiography, this is especially needed due to the existence of rapidly moving structures, such as the heart valves.
Sajjad Afrakhteh   +2 more
semanticscholar   +1 more source

ApodNet: Learning for High Frame Rate Synthetic Transmit Aperture Ultrasound Imaging

IEEE Transactions on Medical Imaging, 2021
Two-way dynamic focusing in synthetic transmit aperture (STA) beamforming can benefit high-quality ultrasound imaging with higher lateral spatial resolution and contrast resolution.
Yinran Chen   +3 more
semanticscholar   +1 more source

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