Results 1 to 10 of about 30,785,842 (283)

Can virtual non-contrast imaging replace true non-contrast imaging in multiphase scanning of the neck region?

Acta Radiologica Open, 2023
Background Dual-energy computed tomography (DECT) is an advanced imaging method that enables reconstruction of virtual non-contrast (VNC) images from a contrast-enhanced acquisition.
Zaid Al-Difaie, Max HMC Scheepers, Nicole D Bouvy, Sanne Engelen, Bas Havekes, Alida A Postma   +5 more
doaj   +2 more sources

Automatic view classification of contrast and non-contrast echocardiography

Frontiers in Cardiovascular Medicine, 2022
BackgroundContrast and non-contrast echocardiography are crucial for cardiovascular diagnoses and treatments. Correct view classification is a foundational step for the analysis of cardiac structure and function. View classification from all sequences of
Ye Zhu, Ye Zhu, Ye Zhu, Junqiang Ma, Junqiang Ma, Zisang Zhang, Zisang Zhang, Zisang Zhang, Yiwei Zhang, Yiwei Zhang, Yiwei Zhang, Shuangshuang Zhu, Shuangshuang Zhu, Shuangshuang Zhu, Manwei Liu, Manwei Liu, Manwei Liu, Ziming Zhang, Ziming Zhang, Ziming Zhang, Chun Wu, Chun Wu, Chun Wu, Xin Yang, Jun Cheng, Jun Cheng, Dong Ni, Dong Ni, Mingxing Xie, Mingxing Xie, Mingxing Xie, Wufeng Xue, Wufeng Xue, Li Zhang, Li Zhang, Li Zhang   +35 more
doaj   +2 more sources

Generating synthetic contrast enhancement from non-contrast chest computed tomography using a generative adversarial network

Scientific Reports, 2021
This study aimed to evaluate a deep learning model for generating synthetic contrast-enhanced CT (sCECT) from non-contrast chest CT (NCCT). A deep learning model was applied to generate sCECT from NCCT.
Jae Won Choi, Yeon Jin Cho, Ji Young Ha, Seul Bi Lee, Seunghyun Lee, Young Hun Choi, Jung-Eun Cheon, Woo Sun Kim   +7 more
doaj   +2 more sources

Multi-organ segmentation of abdominal structures from non-contrast and contrast enhanced CT images

Scientific Reports, 2022
Manually delineating upper abdominal organs at risk (OARs) is a time-consuming task. To develop a deep-learning-based tool for accurate and robust auto-segmentation of these OARs, forty pancreatic cancer patients with contrast-enhanced breath-hold ...
Cenji Yu, Chidinma P. Anakwenze, Yao Zhao, Rachael M. Martin, Ethan B. Ludmir, Joshua S.Niedzielski, Asad Qureshi, Prajnan Das, Emma B. Holliday, Ann C. Raldow, Callistus M. Nguyen, Raymond P. Mumme, Tucker J. Netherton, Dong Joo Rhee, Skylar S. Gay, Jinzhong Yang, Laurence E. Court, Carlos E. Cardenas   +17 more
doaj   +2 more sources

Evaluating anemia on non-contrast thoracic computed tomography

Scientific Reports, 2022
Anemia is a major global disease burden factor linked to an adverse impact on overall prognosis and negatively affects the quality of life. There are some suggested findings for anemia on non-contrast chest CT, like relatively dense interventricular ...
Bita Abbasi, Maliheh Seyed Hosseini, AmirAli Moodi Ghalibaf, Reza Akhavan, Maryam Emadzadeh, Ehsan Bolvardi   +5 more
doaj   +2 more sources

Virtual Non-Contrast versus True Non-Contrast Computed Tomography: Initial Experiences with a Photon Counting Scanner Approved for Clinical Use

Diagnostics, 2021
The present study evaluates the diagnostic reliability of virtual non-contrast (VNC) images acquired with the first photon counting CT scanner that is approved for clinical use by comparing quantitative image properties of VNC and true non-contrast (TNC)
Julius Henning Niehoff, Matthias Michael Woeltjen, Kai Roman Laukamp, Jan Borggrefe, Jan Robert Kroeger   +4 more
doaj   +2 more sources

Successful use of non-contrast dual energy computed tomography in patients with differentiated thyroid cancer [PDF]

Frontiers in Endocrinology
BackgroundDifferentiated thyroid cancer (DTC) is the most commonly diagnosed endocrine cancer. Diagnosis of DTC metastases is possible with the use of ultrasound, RAI scintigraphy, [18F]FDG PET/CT, or contrast-enhanced CT; however, the use of iodine ...
Adam Daniel Durma, Adam Daniel Durma, Marek Saracyn, Marek Saracyn, Arkadiusz Zegadło, Arkadiusz Zegadło, Grzegorz Kamiński   +6 more
doaj   +2 more sources

Comparison of Virtual Non-Contrast and True Non-Contrast CT Images Obtained by Dual-Layer Spectral CT in COPD Patients

Bioengineering
Chronic obstructive pulmonary disease (COPD) is one of the leading causes of death. Recent studies have underlined the importance of non-contrast-enhanced chest CT scans not only for emphysema progression quantification, but for correlation with clinical
Manuel Steinhardt, Alexander W. Marka, Sebastian Ziegelmayer, Marcus Makowski, Rickmer Braren, Markus Graf, Joshua Gawlitza   +6 more
doaj   +2 more sources

Non-Contrast Radiation-Free NIR Lung Imaging [PDF]

Biomedicines
Background/Objectives: Early localization of solitary pulmonary nodules (SPNs) remains challenging despite technological advances in endoscopic navigation, as the procedure often necessitates multiple ionizing imaging examinations.
Jiří Votruba, Martin Drahanský, Tomáš Goldmann, Tomáš Brůha, Radim Kolář   +4 more
doaj   +2 more sources

Spontaneous Isolated Celiac Artery Dissection With Subtle Non‐Contrast CT Findings [PDF]

Journal of General and Family Medicine
So Sakamoto
doaj   +2 more sources