Results 91 to 100 of about 5,344,290 (172)

Differentiation of Adrenal Adenomas from Non-Adenomatous Lesions: Diagnostic Value of Unenhanced Spectral CT

Tomography
Background: Differentiating adrenal adenomas from non-adenomatous lesions remains a critical challenge in the management of adrenal incidentalomas. Conventional unenhanced CT relies on attenuation thresholds of 10 HU and 20 HU, which present trade-offs ...
Tommasa Catania, Grazia Morabito, Simone Barbera, Massimo Venturini, Federico Fontana, Eduardo Maccarrone, Grazia Maria Arillotta, Velio Ascenti, Silvio Mazziotti, Thomas Joseph Vogl, Giovanni Foti, Tommaso D’Angelo, Giorgio Ascenti   +12 more
doaj   +1 more source

Human factors consideration in the interaction process with virtual environment [PDF]

, 2010
Newrequirements are needed by industry for computer aided design (CAD) data. Some techniques of CAD data management and the computer power unit capabilities enable an extraction of a virtual mock-up for an interactive use.
MERIENNE, Frédéric
core  

Optimization of dental implant imaging using photon-counting detector computed tomography in oral and maxillofacial surgery: an ex vivo study

European Radiology Experimental
Objective To determine optimal reconstruction parameters for dental implant imaging using photon-counting detector CT (PCD-CT), including ultra-high-resolution (UHR) images, virtual monoenergetic images (VMI), and iterative metal artifact reduction (iMAR)
Adib Al-Haj Husain, Tristan T. Demmert, Konstantin Klambauer, Philipp Maintz, Thomas Flohr, Harald Essig, Maximilian Eberhard Hermann Wagner, Sameena Sandhu, Egon Burian, Bernd Stadlinger, Hatem Alkadhi, Victor Mergen   +11 more
doaj   +1 more source

Evaluation of peri-plaque pericoronary adipose tissue attenuation in coronary atherosclerosis using a dual-layer spectral detector CT

Frontiers in Medicine
PurposeThis study aimed to evaluate the differences between pericoronary adipose tissue (PCAT) attenuation at different measured locations in evaluating coronary atherosclerosis using spectral computed tomography (CT) and to explore valuable imaging ...
Yulin Jia, Lei Zou, Lei Zou, Ming Xue, Xiaoyu Zhang, Xigang Xiao   +5 more
doaj   +1 more source

Photon-Counting Detector CT Virtual Monoenergetic Images in Cervical Trauma Imaging—Optimization of Dental Metal Artifacts and Image Quality

Diagnostics
Objectives: The aim of this study was to analyze the extent of dental metal artifacts in virtual monoenergetic (VME) images, as they often compromise image quality by obscuring soft tissue affecting vascular attenuation reducing sensitivity in the detection of dissections.
Daniel Dillinger, Daniel Overhoff, Matthias F. Froelich, Hanns L. Kaatsch, Christian Booz, Achim Hagen, Thomas J. Vogl, Stefan O. Schönberg, Stephan Waldeck   +8 more
openaire   +3 more sources

Signal to noise ratio analysis in virtual source array imaging [PDF]

, 2013
We consider correlation-based imaging of a reflector located on one side of a passive array where the medium is homogeneous. On the other side of the array the illumination by remote impulsive sources goes through a strongly scattering medium.
Josselin, Garnier, Adrien, Semin, George, Papanicolaou, Chrysoula, Tsogka   +3 more
core  

Application Value of Dual-source CT Noise-optimized Virtual Monoenergetic Imaging Technology in Portal Vein Imaging of Patients with Portal Hypertension

CT Lilun yu yingyong yanjiu
Objective: This study aimed to compare and analyze the effects of different keV values of dual-source computed tomography (CT) noise-optimized virtual monoenergetic imaging (VMI+) on the quality of portal vein imaging in patients with portal hypertension
Weina LIU, Xiaoli SUN, Yongli DUAN, Meng HUO, Mingxia ZHANG, Rengui WANG   +5 more
doaj   +1 more source

Combining virtual monoenergetic imaging and iterative metal artifact reduction in first-generation photon-counting computed tomography of patients with dental implants. [PDF]

Eur Radiol, 2023
Patzer TS, Kunz AS, Huflage H, Gruschwitz P, Pannenbecker P, Afat S, Herrmann J, Petritsch B, Bley TA, Grunz JP.   +9 more
europepmc   +1 more source

Comment on "Photon-Counting Detector CT-Based Virtual Monoenergetic Imaging for Endodontic Diagnostics". [PDF]

Int Dent J
Tribhuvan M, Phatke SN.
europepmc   +1 more source

Reduction of CT number location dependency using photon-counting detector CT and virtual monoenergetic imaging. [PDF]

Phys Med Biol
Sadeghian M, Swicklik JR, McCollough CH, Hu Y, Leng S.   +4 more
europepmc   +1 more source