Results 21 to 30 of about 7,128,729 (255)

X‐ray Stain Localization with Near‐Field Ptychographic Computed Tomography

Advanced Science, 2022
Although X‐ray contrast agents offer specific characteristics in terms of targeting and attenuation, their accumulation in the tissue on a cellular level is usually not known and difficult to access, as it requires high resolution and sensitivity.
Kirsten Taphorn, Madleen Busse, Johannes Brantl, Benedikt Günther, Ana Diaz, Mirko Holler, Martin Dierolf, Doris Mayr, Franz Pfeiffer, Julia Herzen   +9 more
doaj   +1 more source

In-situ Analysis of Laminated Composite Materials by X-ray Micro-Computed Tomography and Digital Volume Correlation [PDF]

, 2013
The complex mechanical behaviour of composite materials, due to internal heterogeneity and multi-layered composition impose deeper studies. This paper presents an experimental investigation technique to perform volume kinematic measurements in composite ...
Dupré, J.C., Doumalin, Pascal, Germaneau, Arnaud, Brault, Romain, Fazzini, Marina, Brault, R., Doumalin, P., Mistou, Sébastien, Germaneau, A., Dupré, Jean-Christophe   +9 more
core   +1 more source

Time Resolved Two Dimensional X-Ray Densitometry of a Two Phase Flow Downstream of a Ventilated Cavity [PDF]

, 2013
To measure the void fraction distribution in gas-liquid flows, a two-dimensional x-ray densitometry system was developed. This system is capable of acquiring a two-dimensional projection with a 225 cm2 area of measurement through 21 cm of water.
GABILLET, Céline, PAIK, Bu-Geun, MAKIHARJU, Simo A, Ceccio, Steven L., PERLIN, Marc, CHANG, Natasha A, Mäkiharju, Simo A., Chang, Natasha A., CECCIO, Steven L   +8 more
core   +1 more source

X-ray computed tomography in life sciences

BMC Biology, 2020
Recent developments within micro-computed tomography (μCT) imaging have combined to extend our capacity to image tissue in three (3D) and four (4D) dimensions at micron and sub-micron spatial resolutions, opening the way for virtual histology, live cell ...
Shelley D. Rawson, Jekaterina Maksimcuka, Philip J. Withers, Sarah H. Cartmell   +3 more
doaj   +1 more source

Microfocus X-ray computed tomography analysis of corroded glass objects

, 2022
S.93-99Microfocus X-ray computed tomography (mu CT) is a useful tool for non-destructive analysis of corroded archaeological glass objects and for monitoring restoration and conservation processes for these materials.
Mees, F., Carbo, M.T.D., Jacobs, P., Cornelis, E., Römich, H.   +4 more
core   +1 more source

3D ultrastructural organization of whole Chlamydomonas reinhardtii cells studied by nanoscale soft x-ray tomography [PDF]

, 2012
The complex architecture of their structural elements and compartments is a hallmark of eukaryotic cells. The creation of high resolution models of whole cells has been limited by the relatively low resolution of conventional light microscopes and the ...
Achilleas S. Frangakis, Hummel, E., Michael Kunz, Eric Hummel, Werner, Stephan, Basel Tarek, Frangakis, Achilleas S., Gerd Schneider, Frangakis, A.S., Tarek, B., Schneider, G., Westermann, B., Basel Tarek (107662), Michael Kunz (107666), Hummel, Eric, Werner, S., Stephan Werner, Tarek, Basel, Benedikt Westermann (107668), Guttmann, Peter, Westermann, Benedikt, Benedikt Westermann, Peter Guttmann, Stephan Werner (107660), Gerd Schneider (107664), Kunz, Michael, Achilleas S. Frangakis (107667), Peter Guttmann (107658), Kunz, M., Achilleas S Frangakis, Eric Hummel (107656), Guttmann, P., Schneider, Gerd   +32 more
core   +2 more sources

Algorithms for joint activity–attenuation estimation from positron emission tomography scatter

EJNMMI Physics, 2019
Background Attenuation correction in positron emission tomography remains challenging in the absence of measured transmission data. Scattered emission data may contribute missing information, but quantitative scatter-to-attenuation (S2A) reconstruction ...
Yannick Berker, Volkmar Schulz, Joel S. Karp   +2 more
doaj   +1 more source

An experimental survey of metal artefact reduction in computed tomography [PDF]

, 2013
We present a survey of techniques for the reduction of streaking artefacts caused by metallic objects in X-ray Computed Tomography (CT) images. A comprehensive review of the existing state-of- the-art Metal Artefact Reduction (MAR) techniques, drawn ...
Van Slambrouck, Katrien, Nuyts, Johan, Breckon, Toby P., Van Slambrouck, K., Breckon, T.P., Megherbi, N., Megherbi Bouallagui, Najla, Mouton, Andre, Nuyts, J., Mouton, A.   +9 more
core   +1 more source

X-ray phase-contrast computed tomography for full-breast mastectomy imaging at the Australian Synchrotron

, 2021
One of the imaging modalities offered by the Imaging and Medical Beamline (IMBL) at the Australian Synchrotron is Xray phase-contrast propagation-based computed tomography (PB-CT). The unique combination of high coherence and high brightness of radiation
Stevenson, Andrew W., Dimmock, Matthew, Hasermann, Daniel, Maksimenko, Anton, Lewis, Sarah (R21243), Nesterets, Yakov I., Taba, Seyedamir T., Quiney, Harry M., Hall, Christopher J., Thompson, Darren, Mayo, Sheridan C., Arhatari, Benedicta D., Brennan , Patrick C., Gureyev, Timur E.   +13 more
core   +1 more source

The impact of the COVID-19 pandemic on the structure of radiation diagnostics and collective doses of the population of the Russian Federation under medical irradiation in 2020

Радиационная гигиена, 2022
Computed tomography has become the main method of early diagnostics of COVID-19 during the pandemic of the novel coronavirus infection. Based on results of computed tomography of the chest it is possible to diagnose viral pneumonia associated with COVIS ...
А. Yu. Popova, A. V. Vodovatov, I. K. Romanovich, S. A. Ryzhov, P. S. Druzhinina, R. R. Akhmatdinov   +5 more
doaj   +1 more source