Results 51 to 60 of about 1,826,590 (358)
Image Reconstruction Using a Mixture Score Function (MSF) [PDF]
arXiv, 2023 Computed tomography (CT) reconstructs volumetric images using X-ray projection data acquired from multiple angles around an object. For low-dose or sparse-view CT scans, the classic image reconstruction algorithms often produce severe noise and artifacts. To address this issue, we develop a novel iterative image reconstruction method based on maximum a
arxiv
Data Imputation with Iterative Graph Reconstruction
Proceedings of the AAAI Conference on Artificial Intelligence, 2023 Effective data imputation demands rich latent ``structure" discovery capabilities from ``plain" tabular data. Recent advances in graph neural networks-based data imputation solutions show their structure learning potentials by translating tabular data as bipartite graphs.
Zhong, Jiajun, Ye, Weiwei, Gui, Ning
openaire +2 more sources
Mathematics, 2022 Iterative image reconstruction algorithms have considerable advantages over transform methods for computed tomography, but they each have their own drawbacks.
Omar M. Abou Al-Ola +4 more
doaj +1 more source
Iterative reconstruction methods for wave equations [PDF]
ESAIM: Proceedings, 2012 Some iterative techniques are defined to solve reversible inverse problems and a common formulation is explained. Numerical improvements are suggested and tests validate the methods.
openaire +5 more sources
On iterative reconstruction in the nonlinearized polarization tomography [PDF]
Inverse Problems, 2009 We give uniqueness theorem and reconstruction algorithm for the nonlinearized problem of finding the dielectric anisotropy f of the medium from non-overdetermined polarization tomography data. We assume that the medium has uniform background parameters and that the anisotropic (dielectric permeability) perturbation is described by symmetric and ...
openaire +6 more sources
Iterative motion‐compensation reconstruction ultra‐short TE (iMoCo UTE) for high‐resolution free‐breathing pulmonary MRI [PDF]
Magnetic Resonance in Medicine, 2019 To develop a high‐scanning efficiency, motion‐corrected imaging strategy for free‐breathing pulmonary MRI by combining an iterative motion‐compensation reconstruction with a ultrashort echo time (UTE) acquisition called iMoCo UTE.
Xucheng Zhu +4 more
semanticscholar +1 more source
Bandlimited Frequency-Constrained Iterative Methods
Remote SensingVariable aperture sampling reconstruction matrices have a history of being computationally intensive due to the need to compute a full matrix inverse. In the field of remote sensing, several spaceborne radiometers and scatterometers, which have irregular
Harrison Garrett, David G. Long
doaj +1 more source
Reduction of metal artifact in single photon-counting computed tomography by spectral-driven iterative reconstruction technique. [PDF]
PLoS ONE, 2015 The exciting prospect of Spectral CT (SCT) using photon-counting detectors (PCD) will lead to new techniques in computed tomography (CT) that take advantage of the additional spectral information provided.
Radin A Nasirudin +7 more
doaj +1 more source
Investigation of iterative image reconstruction in three-dimensional optoacoustic tomography [PDF]
Phys. Med. Biol. 57 (2012) 5399-5423, 2012 Iterative image reconstruction algorithms for optoacoustic tomography (OAT), also known as photoacoustic tomography, have the ability to improve image quality over analytic algorithms due to their ability to incorporate accurate models of the imaging physics, instrument response, and measurement noise.
arxiv +1 more source
Molecular Oncology, EarlyView.We quantified and cultured circulating tumor cells (CTCs) of 62 patients with various cancer types and generated CTC‐derived tumoroid models from two salivary gland cancer patients. Cellular liquid biopsy‐derived information enabled molecular genetic assessment of systemic disease heterogeneity and functional testing for therapy selection in both ...
Nataša Stojanović Gužvić +31 more
wiley +1 more source