Results 31 to 40 of about 5,344,290 (172)

Spectral CT in peritoneal carcinomatosis from ovarian cancer: a tool for differential diagnosis of small nodules?

European Radiology Experimental, 2022
The detection of peritoneal carcinomatosis in patients with ovarian cancer is crucial to establish the correct therapeutic planning (debulking surgery versus neoadjuvant chemotherapy).
Giada Zorzetto, Andrea Coppola, Valeria Molinelli, Maria Gloria Angeretti, Jvan Casarin, Federico Fontana, Filippo Piacentino, Giulio Carcano, Fabio Ghezzi, Massimo Venturini   +9 more
doaj   +1 more source

Improved detectability of hypoattenuating focal pancreatic lesions by dual-layer computed tomography using virtual monoenergetic images

The Egyptian Journal of Radiology and Nuclear Medicine, 2020
Background Multidetector CT is the mainstay for radiologic evaluation of pancreatic pathology. Still, imaging of focal pancreatic lesions using MDCT is faced by a number of challenges that are related to the limited contrast between the lesion and ...
Nada El Kayal, Ahmed Mohallel, David Maintz, Mohamed Eid, Doaa Mokhtar Emara   +4 more
doaj   +1 more source

Principles and Applications of Dual-Layer Spectral CT in Gastrointestinal Imaging

Diagnostics, 2023
The advance in technology allows for the development of different CT scanners in the field of dual-energy computed tomography (DECT). In particular, a recently developed detector-based technology can collect data from different energy levels, thanks to ...
Paolo Niccolò Franco, Chiara Maria Spasiano, Cesare Maino, Elena De Ponti, Maria Ragusi, Teresa Giandola, Simone Terrani, Marta Peroni, Rocco Corso, Davide Ippolito   +9 more
doaj   +1 more source

Laser acceleration of monoenergetic protons via a double layer emerging from an ultra-thin foil [PDF]

, 2009
We present theoretical and numerical studies of the acceleration of monoenergetic protons in a double layer formed by the laser irradiation of an ultra-thin film.
Shukla, Padma K., Liu, Chuan S., Shao, Xi, Sagdeev, Roald Z., Eliasson, Bengt   +4 more
core   +2 more sources

Dual-Energy CT Arthrography: Advanced Muscolo-Skelatal Applications in Clinical Practice

Tomography, 2023
This paper provides a comprehensive overview of the potential applications of dual-energy CT (DECT) in improving image quality and the diagnostic capabilities of CT arthrography (CTA) in clinical practice. The paper covers the use of virtual non-contrast
Giovanni Foti, Christian Booz, Giuseppe Mauro Buculo, Eugenio Oliboni, Chiara Longo, Paolo Avanzi, Antonio Campacci, Claudio Zorzi   +7 more
doaj   +1 more source

Virtual monoenergetic imaging for metal artifact reduction in dental implant surgery using photon-counting detector computed tomography. [PDF]

Imaging Sci Dent
Purpose This ex vivo study was performed to determine the optimal energy level for virtual monoenergetic images (VMIs) generated with photon-counting detector computed tomography (PCD-CT) to minimize metal artifacts from dental implants.Materials And ...
Al-Haj Husain A, Mergen V, Sartoretti T, Al-Haj Husain N, Winklhofer S, Alkadhi H, Stadlinger B, Essig H, Valdec S.   +8 more
europepmc   +2 more sources

Virtual monoenergetic images from dual-energy CT: systematic assessment of task-based image quality performance [PDF]

Quantitative Imaging in Medicine and Surgery, 2022
Background: To compare task-based image quality (TB-IQ) among virtual monoenergetic images (VMI) and linear-blended images (LBI) from dual-energy CT as a function of contrast task, radiation dose, size, and lesion diameter. Methods: A TB-IQ phantom (Mercury Phantom 4.0, Sun Nuclear Corporation) was imaged on a third-generation dual-source dual-energy ...
Cester, Davide, Eberhard, Matthias, Alkadhi, Hatem, Euler, André   +3 more
openaire   +3 more sources

Optimal Conspicuity of Liver Metastases in Virtual Monochromatic Imaging Reconstructions on a Novel Photon-Counting Detector CT—Effect of keV Settings and BMI

Diagnostics, 2022
In dual-energy CT datasets, the conspicuity of liver metastases can be enhanced by virtual monoenergetic imaging (VMI) reconstructions at low keV levels. Our study investigated whether this effect can be reproduced in photon-counting detector CT (PCD-CT)
Stefanie Bette, Josua A. Decker, Franziska M. Braun, Judith Becker, Mark Haerting, Thomas Haeckel, Michael Gebhard, Franka Risch, Piotr Woźnicki, Christian Scheurig-Muenkler, Thomas J. Kroencke, Florian Schwarz   +11 more
doaj   +1 more source

Quantum iterative reconstruction on a photon-counting detector CT improves the quality of hepatocellular carcinoma imaging

Cancer Imaging, 2023
Background Excellent image quality is crucial for workup of hepatocellular carcinoma (HCC) in patients with liver cirrhosis because a signature tumor signal allows for non-invasive diagnosis without histologic proof.
Dirk Graafen, Fabian Stoehr, Moritz C. Halfmann, Tilman Emrich, Friedrich Foerster, Yang Yang, Christoph Düber, Lukas Müller, Roman Kloeckner   +8 more
doaj   +1 more source

Principles and Available Hardware in DECT

Journal of Gastrointestinal and Abdominal Radiology, 2022
Computed tomography (CT) has undergone a phenomenal evolution since its introduction in 1971 and has revolutionized diagnostic radiology. It is now the cornerstone of diagnostic imaging and has become an inevitable part of the management of patients ...
Ezhilmathi Alavandar, Venkatesh Kasi Arunachalam, Niyas Narappulan, Gowtham S. Mahadevan, Ravindar Kashyap, Pankaj Mehta, Mathew Cherian   +6 more
doaj   +1 more source