Results 11 to 20 of about 30,785,842 (283)

Pulmonary Embolism: Diagnosis by Computerized Tomography without Intravenous Contrast [PDF]

Journal of Education and Teaching in Emergency Medicine, 2017
History of present illness: A 91-year-old female with a history of deep venous thrombosis presented to a rural Emergency Department with symptoms of dyspnea and chest pain radiating towards her back.
James Roy Waymack
doaj   +2 more sources

Differentiating between cardiac amyloidosis and hypertrophic cardiomyopathy on non-contrast cine-magnetic resonance images using machine learning-based radiomics

Frontiers in Cardiovascular Medicine, 2022
ObjectivesThis study aimed to determine whether texture analysis (TA) and machine learning-based classifications can be applied in differential diagnosis of cardiac amyloidosis (CA) and hypertrophic cardiomyopathy (HCM) using non-contrast cine cardiac ...
Shu Jiang, Shu Jiang, Lianlian Zhang, Jia Wang, Xia Li, Su Hu, Yigang Fu, Xin Wang, Shaowei Hao, Chunhong Hu   +9 more
doaj   +1 more source

Large-scale pancreatic cancer detection via non-contrast CT and deep learning

Nature Medicine, 2023
A deep learning model provides high accuracy in detecting pancreatic lesions in multicenter data, outperforming radiology specialists. Pancreatic ductal adenocarcinoma (PDAC), the most deadly solid malignancy, is typically detected late and at an ...
K. Cao, Yingda Xia, Jia-Wen Yao, Xu Han, Lukáš Lambert, Ting-Ting Zhang, Wei Tang, Gang Jin, Hui Jiang, Xu Fang, Isabella Nogues, Xuezhou Li, Wen-Chao Guo, Yu Wang, Wei Fang, Mingyan Qiu, Yang Hou, T. Kovárník, M. Vočka, Yimei Lu, Yingli Chen, Xin Chen, Zaiyi Liu, Jian Zhou, Chuanmiao Xie, Rong Zhang, Hong Lu, Gregory D. Hager, Alan L. Yuille, Le Lu, C. Shao, Yu Shi, Qi Zhang, Tingbo Liang, Ling Zhang, Jian-Ping Lu   +35 more
semanticscholar   +1 more source

Stasis Leg Ulcers: Venous System Revises by Triggered Angiography Non-Contrast-Enhanced Sequence Magnetic Resonance Imaging

Diagnostics, 2020
Objectives: The distribution of venous pathology in stasis leg ulcers is unclear. The main reason for this uncertainty is the lack of objective diagnostic tools.
Chien-Wei Chen, Yuan-Hsi Tseng, Min Yi Wong, Chao-Ming Wu, Bor-Shyh Lin, Yao-Kuang Huang   +5 more
doaj   +1 more source

Coronary calcium scoring on virtual non-contrast and virtual non-iodine reconstructions compared to true non-contrast images using photon-counting computed tomography

European Radiology, 2023
Objectives To compare coronary artery calcification (CAC) scores measured on virtual non-contrast (VNC) and virtual non-iodine (VNI) reconstructions computed from coronary computed tomography angiography (CCTA) using photon-counting computed tomography ...
Simran P. Sharma, J. van der Bie, M. van Straten, Alexander Hirsch, D. Bos, M. Dijkshoorn, R. Booij, Ricardo P. J. Budde   +7 more
semanticscholar   +1 more source

Novel Diagnostic Options without Contrast Media or Radiation: Triggered Angiography Non-Contrast-Enhanced Sequence Magnetic Resonance Imaging in Treating Different Leg Venous Diseases

Diagnostics, 2020
Objectives: Venous diseases in the lower extremities long lacked an objective diagnostic tool prior to the advent of the triggered angiography non-contrast-enhanced (TRANCE) technique.
Chien-Wei Chen, Yuan-Hsi Tseng, Chien-Chiao Lin, Chih-Chen Kao, Min Yi Wong, Bor-Shyh Lin, Yao-Kuang Huang   +6 more
doaj   +1 more source

A deep learning system for automated kidney stone detection and volumetric segmentation on non-contrast CT scans

Medical Physics (Lancaster), 2022
Purpose: Early detection and size quantification of renal calculi are important for optimizing treatment and preventing severe kidney stone disease. Volumetric measurements of kidney stones are more informative and reproducible than linear measurements ...
Daniel C. Elton, E. Turkbey, P. Pickhardt, R. M. Summers   +3 more
semanticscholar   +1 more source

Assessment of Abdominal Aorta Diameter on Contrast-enhanced Computed Tomography: A MDCT-based Observational Study [PDF]

Journal of Clinical and Diagnostic Research, 2023
Introduction: Average size of the abdominal aorta is less than 3 cm which variates with time. The increase in abdominal aortic dimensions more than 3 cm can result in the presence of ectasia which can further convert into an aneurysm.
Rakhee Shashikant Naik, U Raghuraj
doaj   +1 more source

Safety and efficacy of tenecteplase in patients with wake-up stroke assessed by non-contrast CT (TWIST): a multicentre, open-label, randomised controlled trial.

Lancet Neurology, 2022
BACKGROUND Current evidence supports the use of intravenous thrombolysis with alteplase in patients with wake-up stroke selected with MRI or perfusion imaging and is recommended in clinical guidelines.
M. Roaldsen, Agnethe Eltoft, T. Wilsgaard, Hanne Christensen, S. Engelter, B. Indredavik, D. Jatužis, G. Karelis, J. Kõrv, E. Lundström, J. Petersson, J. Putaala, M. Søyland, A. Tveiten, A. Bivard, S. Johnsen, M. Mazya, D. Werring, Teddy Y. Wu, G. D. De Marchis, T. Robinson, E. Mathiesen   +21 more
semanticscholar   +1 more source

CyTran: A cycle-consistent transformer with multi-level consistency for non-contrast to contrast CT translation [PDF]

Neurocomputing, 2021
We propose a novel approach to translate unpaired contrast computed tomography (CT) scans to non-contrast CT scans and the other way around. Solving this task has two important applications: (i) to automatically generate contrast CT scans for patients ...
Nicolae-Cătălin Ristea, Andreea-Iuliana Miron, O. Savencu, Mariana-Iuliana Georgescu, N. Verga, F. Khan, Radu Tudor Ionescu   +6 more
semanticscholar   +1 more source