Extension of Coronavirus Disease 2019 on Chest CT and Implications for Chest Radiographic Interpretation.

ABSTRACT:

Purpose

To study the extent of pulmonary involvement in coronavirus 19 (COVID-19) with quantitative CT and to assess the impact of disease burden on opacity visibility on chest radiographs.

Materials and methods

This retrospective study included 20 pairs of CT scans and same-day chest radiographs from 17 patients with COVID-19, along with 20 chest radiographs of controls. All pulmonary opacities were semiautomatically segmented on CT images, producing an anteroposterior projection image to match the corresponding frontal chest radiograph. The quantitative CT lung opacification mass (QCT_mass) was defined as (opacity attenuation value + 1000 HU)/1000 × 1.065 (g/mL) × combined volume (cm³) of the individual opacities. Eight thoracic radiologists reviewed t

SUBMITTER: Choi H 

PROVIDER: S-EPMC7233433 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature