Results 281 to 290 of about 20,605,475 (335)

High frame rate cardiac 4D imaging

IEEE Symposium on Ultrasonics, 2003, 2004
Currently available cardiac 4D imaging solutions offer only limited spatial and temporal resolution compared to conventional 2D imaging. Therefore, especially thin and fast moving structures such as cardiac valves cannot be depicted with high accuracy. To overcome these problems we have developed a setup that is capable to create ultrasonic volume data
J.C. Schlegel, C. Vos, B. Mumm, N. Froese, A. Geibel, G. Heinrichs, C. Jahnke, M. Handke   +7 more
openaire   +1 more source

A High-Frame-Rate-Imaging-Based Framework for Moving Point Target Detection in Very Low SNR

IEEE Transactions on Aerospace and Electronic Systems
This article proposes a framework for low-signal-to-noise-ratio (SNR) moving point target detection based on the temporal profile analysis of high-frame-rate image sequences.
Wenlong Niu, Yingyi Guo, Xiaoqing Han, Rui Ma, Wei Zheng, Xiaodong Peng, Zhen Yang   +6 more
semanticscholar   +1 more source

Diverging wave compounding with spatio‐temporal encoding using orthogonal Golay pairs for high frame rate imaging

Ultrasonics, 2018
HIGHLIGHTSAn encoding method for DWC using orthogonal Golay pairs (OGPs‐coded DWC) is proposed.Two DWs coded by an orthogonal Golay pair are transmitted simultaneously.OGPs‐coded DWC solves the problem of frame rate reduction caused by Golay codes.The ...
Feifei Zhao, Jianwen Luo
semanticscholar   +1 more source

High Frame Rate Along-Track Swarm SAR Subaperture Collaboration Imaging for Moving Target

IEEE Transactions on Geoscience and Remote Sensing
As a novel configuration of along-track multistatic synthetic aperture radar (Multi-SAR), the high frame rate along-track swarm SAR (ATS-SAR) has garnered significant attention in recent years due to its exceptional efficiency in reducing data ...
Nan Jiang, Jianlai Chen, Jiahua Zhu, B. Liang, Degui Yang, Xiaotao Huang, Mengdao Xing   +6 more
semanticscholar   +1 more source

HIGH FRAME RATE ELECTRONIC IMAGING

Optics and Photonics News, 1995
Hughes discusses high-speed imagers, their economic and technological impact as well as requirements for high- speed applications.
openaire   +1 more source

Development of a high frame rate neutron imaging method for two-phase flows

, 2020
A high frame rate neutron imaging system has been developed at the Pennsylvania State University utilizing the Breazeale TRIGA reactor in the Radiation Science and Engineering Center.
C. Lani, R. Zboray
semanticscholar   +1 more source

Flow Visualization Through Locally Activated Nanodroplets and High Frame Rate Imaging

IUS, 2018
Blood flow visualization and quantification with ultrasound contrast agents using High-Frame-Rate (HFR) imaging has been investigated but the real-time feedback is limited because of the high computational cost.
M. Toulemonde, Ge Zhang, R. Eckersley, M. Tang   +3 more
semanticscholar   +1 more source

Space–time encoding for high frame rate ultrasound imaging

Ultrasonics, 2002
Frame rate in ultrasound imaging can be dramatically increased by using sparse synthetic transmit aperture (STA) beamforming techniques. The two main drawbacks of the method are the low signal-to-noise ratio (SNR) and the motion artifacts, that degrade the image quality.
Thanassis X, Misaridis, Jørgen A, Jensen   +1 more
openaire   +2 more sources

High-frame-rate limited-diffraction beam imaging

The Journal of the Acoustical Society of America, 2022
Limited-diffraction beams such as Bessel beam, X wave, and array beam are a class of beams that in theory do not spread as they propagate to infinite distance. When realized with a finite aperture, these beams have a large depth of field. In this paper, limited-diffraction beams and their applications to high-frame rate imaging are reviewed and further
openaire   +1 more source

High frame rate imaging with a small number of array elements

IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1999
Recently, a high frame rate imaging method has been developed to construct either 2-D or 3-D images (about 3750 frames or volumes/s at a depth of about 200 mm in biological soft tissues because only one transmission is needed). The signal-to-noise ratio (SNR) is high using this method because all array elements are used in transmission and the transmit
J Y, Lu, S, He
openaire   +2 more sources