20 papers · ranked by Valyu relevance
Guanghan Meng, Dekel Galor, Laura Waller, Martin S. Banks
—Viewers of digital displays often experience motion artifacts (e.g., flicker, judder, edge banding, motion blur, color breakup, depth distortion) when presented with dynamic scenes. We developed an interactive software tool for display designers that predicts how a viewer perceives motion artifacts for a variety of…
David Parker, Qolamreza Razlighi
Numerous studies reported motion as the most detrimental source of noise and artifacts in functional magnetic resonance imaging (fMRI). Different approaches have been proposed and used to attenuate the effect of motion on fMRI data, including both prospective and retrospective (post-processing) techniques. However…
Jan Christoph, Stefan Luther
Optical mapping is a high-resolution fluorescence imaging technique, which provides highly detailed visualizations of the electrophysiological wave phenomena, which trigger the beating of the heart. Recent advancements in optical mapping have demonstrated that the technique can now be performed with moving and…
Yunan Wu, Junchi Liu, Gregory M White, Jie Deng
Liver MRI images often suffer degraded quality from ghosting or blurring artifact caused by patient respiratory or bulk motion. In this study, we developed a two-stage deep learning model to reduce motion artifact on dynamic contrast enhanced (DCE) liver MRIs. The stage-I network utilized a deep residual network with a…
Sophie Schauman, Adam van Niekerk, Ola Norbeck, Henric Rydén + 2 more
When 50% of the samples are motion-corrupted (Figure [mrm70132-fig-0006]), similar effects are seen, where motion-artifact appearance changes significantly depending on when the pose changes occur. Again, for the radial cases, the timing strongly affects the directionality of artifact and highlights the need to view…
Alessandra Giangrande, Alberto Botter, Harri Piitulainen, Giacinto Luigi Cerone + 1 more
Despite the progress in the development of innovative EEG acquisition systems, their use in dynamic applications is still limited by motion artifacts compromising the interpretation of the collected signals. Therefore, extensive research on the genesis of motion artifacts in EEG recordings is still needed to optimize…
Nadine Gdaniec, Marija Boberg, Martin Möddel, Patryk Szwargulski + 1 more
'Tobias Knopp'] Abstract— Magnetic particle imaging is a tracer based imaging technique to determine the spatial distribution of superparamagnetic iron oxide nanoparticles with a high spatial and temporal resolution. Due to physiological constraints, the imaging volume is restricted in size and larger volumes are…
Alícia Oliveira, Beatriz Cepa, Cláudia Brito, António Sousa
The correction of artifacts in Magnetic Resonance Imaging (MRI) is increasingly relevant as voluntary and involuntary artifacts can hinder data acquisition. Reverting from corrupted to artifact-free images is a complex task. Deep Learning (DL) models have been employed to preserve data characteristics and to identify…
Christian Hedeager Krag, Felix Christoph Müller, Karen Lind Gandrup, Michael Brun Andersen + 8 more
Objectives To assess the prevalence of motion artifacts and the factors associated with them in a cohort of suspected stroke patients, and to determine their impact on diagnostic accuracy for both AI and radiologists. Materials and methods This retrospective cross-sectional study included brain MRI scans of consecutive…
Bingbing Zhao, Yichen Zhou, Xiaopeng Zong
Prospective motion correction (PMC) is a promising method in mitigating motion artifacts in MRI. However, its effectiveness in improving the visibility of vessel-like thin structures in routine studies is unclear. In this study, we aim to demonstrate the ability of fat-navigator based PMC in improving the visibility of…
Amel F. Alzain, Nagwan Elhussein, Ibtisam Abdallah Fadulelmulla, Amna Mohamed Ahmed + 2 more
'Amna Mohamed Ahmed' 'M. E. Elbashir' 'Badria Awad Elamin'] Background Artifacts have significantly degraded the quality of computed tomography (CT) images, to the extent of making them unusable for diagnosis. The types of artifact that could be used are as follows: (a) streaking, which is commonly due to a discrepancy…
Stanimira Georgieva, Suzannah Lester, Meryem Nazli Yilmaz, Sam Wass + 1 more
Electroencephalography (EEG) is perhaps the most widely used brain-imaging technique for paediatric populations. However, EEG signals are prone to distortion by motion. Compared to adults, infants’ motion is both more frequent and less stereotypical yet motion effects on the infant EEG signal are largely undocumented.…
Andrew D. Thrapp, Michael R. Hughes
Significance: Confocal laser scanning enables optical sectioning in clinical fiber bundle endomicroscopes, but lower-cost, simplified endomicroscopes use widefield incoherent illumination instead. Optical sectioning can be introduced in these simple systems using structured illumination microscopy (SIM), a multiframe…
Mohammad Reza Mohebbian, Ekta Walia, Khan A. Wahid
— Motion artifacts are a common occurrence in the Magnetic Resonance Imaging (MRI) exam. Motion during acquisition has a profound impact on workflow efficiency, often requiring a repeat of sequences. Furthermore, motion artifacts may escape notice by technologists, only to be revealed at the time of reading by the…
Fuhao Chen, Jun Chen, Feng Huang
A simulation method based on the liquid crystal response and the human visual system is suitable to characterize motion blur for LCDs but not other display types. We propose a more straightforward and widely applicable method to quantify motion blur based on the width of the moving object. We thus compare various types…
Zijun Guo, Wenwen Meng, Dongfeng Shi, Linbin Zha + 4 more
'Jian Huang' 'Yafeng Chen' 'Yingjian Wang'] Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China University of Science and Technology of China, Hefei 230026, China Advanced Laser Technology Laboratory…
Niko Vlahakis, Arden Clauss, Jose Rodriguez
High-energy electrons induce sample damage and motion at the nanoscale to fundamentally limit determination of molecular structures by electron diffraction. Using fast event-based electron counting (EBEC) detectors, we characterize electron beam-induced crystal lattice reorientations (BIR) that appear to broadly affect…
Xiaoyu Nie, Xingchen Zhao, Peng Tao, Marlan O. Scully
Imaging Authors: ['Xiaoyu Nie' 'Xingchen Zhao' 'Peng Tao' 'Marlan O. Scully'] We show that a recently developed computational ghost imaging method based on the pink noise speckle pattern has a strong ability to image moving objects. To examine our scheme's unique ability and application scope, we experimentally image…
Kelsey Hatzell, Yanjie Zheng
X-ray Computed Tomography (CT) is a non-invasive, non-destructive approach to imaging materials, material systems and engineered components in two- and three- dimensions. Acquisition of 3D images requires the collection of hundreds or thousands of through-thickness X-ray radiographic images from different angles. Such…
Kairi Masuda
Recently, phase-field modelling has been expanded to the molecular scale. However, such atomistic phase-field simulation cannot treat diffusive motions of molecules so far. Here, we modify phase-field modelling of molecular dynamics to include rigid body motions by employing quaternions and smooth random functions.…