Results 11 to 20 of about 6,942,219 (182)

Influence of beam hardening in dual-energy CT imaging: phantom study for iodine mapping, virtual monoenergetic imaging, and virtual non-contrast imaging [PDF]

European Radiology Experimental, 2021
In this study, we investigated the influence of beam hardening on the dual-energy computed tomography (DECT) values of iodine maps, virtual monoenergetic (VME) images, and virtual non-contrast (VNC) images.
Risa Kanatani, Takashi Shirasaka, Tsukasa Kojima, Toyoyuki Kato, Masateru Kawakubo   +4 more
doaj   +4 more sources

Deep learning methods for virtual monoenergetic imaging from spectral CT

, 2023
International audienceSpectral photon counting computed tomography (CT) is a X-ray imaging modality that acquires energy-resolved data thanks to photon counting detectors that sort photons depending on their energy.
Peyrin, Françoise, Chappard, Christine, Ducros, Nicolas, Abascal, Juan F P J, Bussod, Suzanne, Douek, Philippe   +5 more
core   +12 more sources

Enhancing virtual monoenergetic images for non-congruent dual-energy CT projection data

Current Directions in Biomedical Engineering, 2023
This study investigates the application of joint bilateral filtering for noise reduction in fast kVp switching dualenergy computed tomography (DECT). A high resolution image is calculated from non-congruent data of two scans with different energy spectra.
Hellwege Laura, Schaar Moritz, Buzug Thorsten M., Stille Maik   +3 more
doaj   +3 more sources

Metal artifact reduction by virtual monoenergetic reconstructions from spectral brain CT

European Journal of Radiology Open, 2023
Purpose: Conventional computed tomography (CT) images are severely affected by metal artifacts in patients with intracranial coils. Monoenergetic images have been suggested to reduce metal artifacts.The aim of this study was to assess metal artifacts in ...
Helena Mellander, Veronica Fransson, Kristina Ydström, Jimmy Lätt, Teresa Ullberg, Johan Wassélius, Birgitta Ramgren   +6 more
doaj   +2 more sources

Low-iodine 40-keV virtual monoenergetic CT angiography of the lower extremities

Frontiers in Cardiovascular Medicine, 2023
IntroductionTo evaluate a reduced iodine volume protocol for lower extremity CT angiography (CTA) using dual-energy CT (DECT).MethodsThis retrospective study included consecutive patients who underwent lower extremity CTA from June to December 2022. A 10 
Guillaume Fahrni, Guillaume Fahrni, Guillaume Fahrni, Thomas Mingas, Thomas Mingas, Arthur Deliessche, Arthur Deliessche, Smail Hraichi, Smail Hraichi, David C. Rotzinger, Salim A. Si-Mohamed, Salim A. Si-Mohamed, Sara Boccalini, Sara Boccalini, Philippe Douek, Philippe Douek   +15 more
doaj   +2 more sources

Advanced virtual monoenergetic images: improving the contrast of dual-energy CT pulmonary angiography

Clinical Radiology, 2015
AIM To investigate the value of advanced virtual monoenergetic image reconstruction (mono-plus) from dual-energy computed tomography (CT) for improving the contrast of CT pulmonary angiography (CTPA).
Frauenfelder, T, Desbiolles, L, Wurnig, M, Leschka, S, Alkadhi, H, Meier, A   +5 more
core   +5 more sources

Optimization of window settings for virtual monoenergetic imaging in dual-energy CT of the liver: a multi-reader evaluation of standard monoenergetic and advanced imaged-based monoenergetic datasets

European Journal of Radiology, 2016
OBJECTIVES: To evaluate optimal window settings for display of virtual monoenergetic reconstructions in third-generation dual-source, dual-energy computed tomography (DECT) of the liver.
Picard, Melissa M., Hardie, Andrew D., DE CECCO, CARLO NICOLA, CARUSO, DAMIANO, Wichmann, Julian L., Schaefer, Amanda R., Schoepf, U. Joseph, Ter Louw, Janet R., Perry, Jonathan D., Parker, Leland W.   +9 more
core   +3 more sources

Impact of CT Photon-Counting Virtual Monoenergetic Imaging on Visualization of Abdominal Arterial Vessels

Diagnostics, 2023
Purpose: The novel photon-counting detector (PCD) technique acquires spectral data for virtual monoenergetic imaging (VMI) in every examination. The aim of this study was the evaluation of the impact of VMI of abdominal arterial vessels on quantitative ...
Daniel Overhoff, Christian Booz, Joel Piechotka, Matthias F. Froelich, Daniel Dillinger, Achim Hagen, Thomas J. Vogl, Hanns L. Kaatsch, Stephan Waldeck   +8 more
core   +4 more sources

Imaging Findings of Peripheral Arterial Disease on Lower-Extremity CT Angiography Using a Virtual Monoenergetic Imaging Algorithm

대한영상의학회지, 2022
Peripheral arterial disease (PAD) is common in elderly patients. Lower-extremity CT angiography (LE-CTA) can be useful for detecting PAD and planning its treatment.
Jun Seong Kim, So Hyun Park, Suyoung Park, Jung Han Hwang, Jeong Ho Kim, Seong Yong Park, Kihyun Lee, Bernhard Schmidt   +7 more
doaj   +3 more sources

Generation of quasi-monoenergetic protons from thin multi-ion foils by a combination of laser radiation pressure acceleration and shielded Coulomb repulsion [PDF]

, 2013
We study theoretically and numerically the acceleration of protons by a combination of laser radiation pressure acceleration and Coulomb repulsion of carbon ions in a multi-ion thin foil made of carbon and hydrogen.
He, Minqing, Wang, Jyhpung, Liu, Tung-Chang, Shao, Xi, Chen, Shih-Hung, Liu, Chuan-Sheng, Su, Jao-Jang, Eliasson, Bengt, Tripathi, Vipin   +8 more
core   +6 more sources