Lung volume measurement using chest CT in COVID-19 patients: a cohort study in Japan.

This study aimed to investigate the utility of CT quantification of lung volume for predicting critical outcomes in COVID-19 patients. This retrospective cohort study included 1200 hospitalised patients with COVID-19 from 4 hospitals. Lung fields were extracted using artificial intelligence-based segmentation, and the percentage of the predicted (%pred) total lung volume (TLC (%pred)) was calculated. The incidence of critical outcomes and posthospitalisation complications was compared between patients with low and high CT lung volumes classified based on the median percentage of predicted TLC The incidence of critical outcomes was higher in the low TLC Lower CT lung volume was associated with critical outcomes, posthospitalisation complications and slower improvement of clinical conditions in COVID-19 patients.

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Déclaration de conflit d'intérêts

Competing interests: None declared.