Results 51 to 60 of about 967,991 (168)

Feasibility and Robustness of 3T Magnetic Resonance Angiography Using Modified Dixon Fat Suppression in Patients With Known or Suspected Peripheral Artery Disease

Frontiers in Cardiovascular Medicine, 2020
Objective: Contrast-enhanced magnetic resonance angiography (CE-MRA) is a well-established non-invasive imaging technique for the assessment of peripheral artery disease (PAD). A subtractionless method using modified Dixon (mDixon) fat suppression showed
Karl Jakob Weiss, Karl Jakob Weiss, Holger Eggers, Christian Stehning, Marc Kouwenhoven, Mithal Nassar, Mithal Nassar, Mithal Nassar, Burkert Pieske, Burkert Pieske, Burkert Pieske, Philipp Stawowy, Philipp Stawowy, Bernhard Schnackenburg, Sebastian Kelle, Sebastian Kelle, Sebastian Kelle   +16 more
doaj   +1 more source

Realisation of an Application Specific Multispectral Snapshot-Imaging System Based on Multi-Aperture-Technology and Multispectral Machine Learning Loops

Sensors
Multispectral imaging (MSI) enables the acquisition of spatial and spectral image-based information in one process. Spectral scene information can be used to determine the characteristics of materials based on reflection or absorption and thus their ...
Lennard Wunsch, Martin Hubold, Rico Nestler, Gunther Notni   +3 more
doaj   +1 more source

Evaluation of Image Cryptography by Using Secret Session Key and SF Algorithm

Iraqi Journal for Computers and Informatics, 2023
In the unreliable domain of data communication, safeguarding information from unauthorized access is imperative. Given the widespread application of images across various fields, ensuring the confidentiality of image data holds paramount importance. This
Noor Kareem Jumaa, Abbas Muhammed Allawy
doaj  

Changes in subclinical cardiac abnormalities 1 Year after recovering from COVID-19 in patients without clinical cardiac findings

Heliyon
Aim: To evaluate the subclinical cardiac involvement in COVID-19 patients without clinical cardiac evidence using cardiac MR imaging. Material and methods: Participants recovered from COVID-19 without cardiac symptoms and no cardiovascular medical ...
Haitao Wang, Wei Deng, Yang Zhang, Jinxiu Yang, Zhen Wang, Bin Liu, Yuchi Han, Yongqiang Yu, Ren Zhao, Xiaohu Li   +9 more
doaj   +1 more source

Objective measurements of image quality

Ultrasound in Medicine & Biology, 2004
Tissue harmonic imaging (THI) and compound imaging have been reported clinically to improve contrast resolution, tissue differentiation and overall image quality. However, there have been limited studies to date to quantify objectively the improvements in image quality achieved with these new imaging techniques.
Browne, Jacinta, Watson, Amanda, Gibson, Nicholas, Dudley, Nicholas, Elliott, Alex   +4 more
openaire   +5 more sources

Differences in myocardial involvement between new onset and longstanding systemic lupus erythematosus patients assessed by cardiovascular magnetic resonance

European Journal of Radiology Open
Objectives: Subclinical myocardial involvement is common in systemic lupus erythematosus (SLE), but differences between new onset and longstanding SLE are not fully elucidated.
Zhen Wang, Xing Tang, Chaohui Hang, Hui Gao, Jinxiu Yang, Yuchi Han, Yongqiang Yu, Zongwen Shuai, Ren Zhao, Xiaohu Li   +9 more
doaj   +1 more source

Quality enhancement in image enlargement [PDF]

, 1995
Interpolation methods, usually employed in image enlargement, cause a degradation of the image quality in proximity to the edges. In fact, the best interpolation leads to fuzziness effects often due to the image features ignored during the process. In order to have a contained definition loss after the enlargement operation, it is necessary to consider
MARINO, Francescomaria, MASTRONARDI, Giuseppe   +1 more
openaire   +2 more sources

Quality Assessment of Stereoscopic Images

EURASIP Journal on Image and Video Processing, 2008
Several metrics have been proposed in literature to assess the perceptual quality of two-dimensional images. However, no similar effort has been devoted to quality assessment of stereoscopic images. Therefore, in this paper, we review the different issues related to 3D visualization, and we propose a quality metric for the assessment of stereopairs ...
Benoit, Alexandre, Le Callet, Patrick, Campisi, Patrizio, Cousseau, Romain   +3 more
openaire   +6 more sources

Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces

Journal of Imaging, 2019
High Dynamic Range (HDR) and Wide Color Gamut (WCG) screens are able to render brighter and darker pixels with more vivid colors than ever. To assess the quality of images and videos displayed on these screens, new quality assessment metrics adapted to ...
Maxime Rousselot, Olivier Le Meur, Rémi Cozot, Xavier Ducloux   +3 more
doaj   +1 more source

Towards Prediction of Immersive Virtual Reality Image Quality of Experience and Quality of Service

Future Internet, 2018
In this article, we evaluate the Quality of Service (QoS) through media impairment levels and device operators’ subjective Quality of Experience (QoE).
Anil Kumar Karembai, Jeffrey Thompson, Patrick Seeling   +2 more
doaj   +1 more source