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. 2021 Feb;9(3):216. doi: 10.21037/atm-20-2464

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2021 Annals of Translational Medicine. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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A 55-year-old male (non-severe group) presents the onset symptoms of fever, dry pharynx, and fatigue, and CT shows GGO with consolidation mainly distributed in the peripheral part of the lung (A). The quantitative volume rending CT (B) shows the lesions mainly located in the left upper lobe and right lower lobe, the red zone represents consolidation, yellow zone represents GGO with consolidation, green zone represents GGO, blue zone represents normal pulmonary parenchyma, and white zone represents trachea. The axial image (C) shows the infected regions automatically detected by quantitative CT and marked in red. The histogram of CT value (D) is used to analyse the attenuation of the infected regions. CT, computed tomography; GGO, ground-glass opacity.