Results 71 to 80 of about 8,062,965 (379)

Quantum-implemented selective reconstruction of high-resolution images

, 2004
This paper proposes quantum image reconstruction. Input-triggered selection of an image among many stored ones, and its reconstruction if the input is occluded or noisy, has been simulated by a computer program implementable in a real quantum-physical ...
Bischof, Horst, Caulfield, H. John, Loo, Chu Kiong, Perus, Mitja   +3 more
core   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Adaptive Weighted Total Variation Minimization Based Alternating Direction Method of Multipliers for Limited Angle CT Reconstruction

IEEE Access, 2018
In CT image reconstruction, the limited angle problem is an ill-posed problem. To solve this ill-posed problem, the total variation (TV) regularization has been widely used in image reconstruction. In recent years, an algorithm based on TV regularization
Fulin Luo, Weichen Li, Weiping Tu, Weiwen Wu   +3 more
doaj   +1 more source

Efficient holoscopy image reconstruction

Optics Express, 2012
Holoscopy is a tomographic imaging technique that combines digital holography and Fourier-domain optical coherence tomography (OCT) to gain tomograms with diffraction limited resolution and uniform sensitivity over several Rayleigh lengths. The lateral image information is calculated from the spatial interference pattern formed by light scattered from ...
Hillmann, Dierck, Koch, Peter, Huettmann, Gereon, Franke, Gesa, Luehrs, Christian   +4 more
openaire   +2 more sources

Filtering in SPECT Image Reconstruction [PDF]

International Journal of Biomedical Imaging, 2011
Single photon emission computed tomography (SPECT) imaging is widely implemented in nuclear medicine as its clinical role in the diagnosis and management of several diseases is, many times, very helpful (e.g., myocardium perfusion imaging). The quality of SPECT images are degraded by several factors such as noise because of the limited number of counts,
Maria Lyra, Agapi Ploussi
openaire   +4 more sources

Deep Learning for PET Image Reconstruction

IEEE Transactions on Radiation and Plasma Medical Sciences, 2020
This article reviews the use of a subdiscipline of artificial intelligence (AI), deep learning, for the reconstruction of images in positron emission tomography (PET).
A. Reader, Guillaume Corda, A. Mehranian, Casper O. da Costa-Luis, S. Ellis, J. Schnabel   +5 more
semanticscholar   +1 more source

Image Reconstruction: From Sparsity to Data-Adaptive Methods and Machine Learning [PDF]

Proceedings of the IEEE, 2019
The field of medical image reconstruction has seen roughly four types of methods. The first type tended to be analytical methods, such as filtered backprojection (FBP) for X-ray computed tomography (CT) and the inverse Fourier transform for magnetic ...
S. Ravishankar, J. C. Ye, J. Fessler
semanticscholar   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

On global randomized block Kaczmarz method for image reconstruction

Electronic Research Archive, 2022
Image reconstruction represents an important technique applied in various fields such as medicine, biology, materials science, nondestructive testing, and so forth.
Ranran Li, Hao Liu
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source