COVID-19 Humans 12 SARS-CoV-2 12 human 12 Article 10 Deep learning 10 coronavirus disease 2019 9 training 7 Computerized tomography 6 Learning systems 6 computer assisted tomography 6 deep learning 6 diagnostic imaging 6 Viruses 5 image segmentation 5 machine learning 5 thorax radiography 5 Chest X-ray image 4 Coronavirus 4 Coronaviruses 4 Deep Learning 4 Diagnosis 4 Lung 4 feature extraction 4 learning algorithm 4 lung 4 x-ray computed tomography 4 Biological organs 3 Classification (of information) 3 Computer Simulation 3