The current COVID-19 pandemic has highlighted the essential role of chest computed tomography (CT) examination in patient triage in the emergency departments, allowing them to be referred to "COVID" or "non-COVID" wards. Initial chest CT examination must be performed without intravenous administration of iodinated contrast material, but contrast material administration is required when pulmonary embolism is suspected, which seems to be frequent in severe forms of the disease. Typical CT features consist of bilateral ground-glass opacities with peripheral, posterior and basal predominance. Lung disease extent on CT correlates with clinical severity. Artificial intelligence could assist radiologists for diagnosis and prognosis evaluation.

Highlights Current guidelines recommend the use of unenhanced chest CT as first-line imaging in patients suspected of COVID-19 pneumonia. In unselected COVID-19 patients, the prevalence of PE at baseline is no different from the one in COVID-19 negative patients. There is no clear benefit to routinely perform CTPA as first-line imaging modality in patients suspected of COVID-19 pneumonia

devant une dyspnée aiguë. Les techniques d'intelligence artificielle vont permettre de faire des diagnostics automatiques fiables et de quantifier l'étendue lésionnelle.

provided the 3D image viewer web application and Orange Healthcare data storage resources.