Results 31 to 40 of about 9,369,738 (276)

True Non-Contrast Phase versus Virtual-Non Contrast: “Lights and Shadows” of Dual Energy CT Angiography in Peripheral Arterial Disease

Applied Sciences, 2023
(1) Background: The value of dual-energy CT angiography (DE-CTA) in the detection of peripheral arterial disease (PAD) has been widely recognized. We aim to evaluate the diagnostic accuracy of virtual non-contrast (VNC) imaging of DE-CTA compared to true
Chiara Floridi, Laura Maria Cacioppa, Giacomo Agliata, Michaela Cellina, Nicolo’ Rossini, Tommaso Valeri, Martina Curzi, Alessandro Felicioli, Alessandra Bruno, Marzia Rosati, Roberto Candelari, Andrea Giovagnoni   +11 more
doaj   +1 more source

Particle Production near an AdS Crunch [PDF]

, 2010
We numerically study the dual field theory evolution of five-dimensional asymptotically anti-de Sitter solutions of supergravity that develop cosmological singularities.
A Bernamonti, AV Frolov, B Craps, GN Felder, J Khoury, JLF Barbon, JM Maldacena, Lorenzo Battarra, M Berkooz, M Carreau, M Desroche, M Gasperini, M Henneaux, M Reed, S Elitzur, T Hertog, T Hertog, T Hertog, T Hertog, Thomas Hertog, V Asnin   +20 more
core   +4 more sources

Robustness of Single- and Dual-Energy Deep-Learning-Based Scatter Correction Models on Simulated and Real Chest X-rays

Algorithms, 2023
Chest X-rays (CXRs) represent the first tool globally employed to detect cardiopulmonary pathologies. These acquisitions are highly affected by scattered photons due to the large field of view required. Scatter in CXRs introduces background in the images,
Clara Freijo, Joaquin L. Herraiz, Fernando Arias-Valcayo, Paula Ibáñez, Gabriela Moreno, Amaia Villa-Abaunza, José Manuel Udías   +6 more
doaj   +1 more source

The role of dual-energy computed tomography in the diagnosis of gout and other crystalline arthropathies: A review [PDF]

Digital Diagnostics, 2023
The importance of dual-energy computed tomography in the diagnosis of gout, the principles of dual-energy computed tomography, the accuracy of the methodology, and the types of artifacts are discussed in this study.
Maria V. Onoyko, Elena A. Mershina, Olga A. Georginova, Maria L. Plotnikova, Alexandra V. Panyukova, Valentin E. Sinitsyn   +5 more
doaj   +1 more source

Higher Dimensional Kerr-AdS Black Holes and the AdS/CFT Correspondence [PDF]

, 2000
Using the counterterm subtraction technique we calculatehe stress-energy tensor, action, and other physical quantities for Kerr-AdS black holes in various dimensions.
A. Bilal, A. Chamblin, A. Chamblin, A. M. Awad, A. M. Awad, Adel M. Awad, Clifford V. Johnson, D. Anselmi, D. Anselmi, D. Klemm, D. S. Berman, E. Witten, F. Bastianelli, G. Chalmers, G. T. Horowitz, G. W. Gibbons, J. Bardeen, J. Brown, J. D. Brown, J. Maldacena, K. Landsteiner, M. Blau, M. Caldarelli, M. Henningson, M. J. Cassidy, N. D. Birrell, O. Aharony, P. Kraus, R. B. Mann, R. C. Myers, R. Emparan, S. Das, S. Deser, S. N. Solodukhin, S. Nojiri, S. R. Lau, S. S. Gubser, S. S. Gubser, S. S. Gubser, S. W. Hawking, S. W. Hawking, S. W. Hawking, S. W. Hawking, V. Balasubramanian   +43 more
core   +2 more sources

Advances for Pulmonary Functional Imaging: Dual-Energy Computed Tomography for Pulmonary Functional Imaging

Diagnostics, 2023
Dual-energy computed tomography (DECT) can improve the differentiation of material by using two different X-ray energy spectra, and may provide new imaging techniques to diagnostic radiology to overcome the limitations of conventional CT in ...
Yoshiyuki Ozawa, Yoshiharu Ohno, Hiroyuki Nagata, Keigo Tamokami, Keitaro Nishikimi, Yuka Oshima, Nayu Hamabuchi, Takahiro Matsuyama, Takahiro Ueda, Hiroshi Toyama   +9 more
doaj   +1 more source

Oscillating Strings and Non-Abelian T-dual Klebanov-Witten Background [PDF]

, 2014
We study oscillating string solutions in the Klebanov-Witten and its non-Abelian T-dual background dualised along an SU(2) isometry. We find the string energy as the function of oscillation number and angular momentum.
Pradhan, Pabitra M.
core   +1 more source

Review of Clinical Applications for Virtual Monoenergetic Dual-Energy CT.

Radiology, 2019
In this article, the authors discuss the technical background and summarize the current body of literature regarding virtual monoenergetic (VM) images derived from dual-energy CT data, which can be reconstructed between 40 and 200 keV.
Moritz H. Albrecht, Moritz H. Albrecht, T. Vogl, Simon S. Martin, Simon S. Martin, John Nance, Taylor M. Duguay, J. L. Wichmann, J. L. Wichmann, C. D. Cecco, C. D. Cecco, Á. Varga-Szemes, M. Assen, C. Tesche, U. Schoepf   +14 more
semanticscholar   +1 more source

Mineral Characterization in Human Body: A Dual Energy Approach

Crystals, 2021
Kidney and uteric stones are a common cause of pain and disturbance in numerous people worldwide, as they tend to reappear. There are several studies investigating the association of urolithiasis and nephrolithiasis with atherosclerosis, as patients ...
Niki Martini, Vaia Koukou, Christos Michail, George Fountos   +3 more
doaj   +1 more source

What we do understand of Colour Confinement [PDF]

, 1999
A review is presented of what we understand of colour confinement in QCD. Lattice formulation provides evidence that QCD vacuum is a dual superconductor: the chromoelectric field of a $q\bar q$ pair is constrained by dual Meissner effect into a dual ...
Di Giacomo, Adriano, Lucini, B
core   +5 more sources