Evaluation of Chest CT Scan as a Screening and Diagnostic Tool in Trauma Patients with Coronavirus Disease 2019 (COVID-19): A Cross-Sectional Study
Table 1
RSNA criteria for COVID-19 pneumonia (adopted from reference [14]).
COVID-19 RSNA classification
Rationale
Chest CT scan findings
Typical appearance
Commonly reported imaging feature of greater specificity for COVID-19
(i) Peripheral and bilateral GGO with/without consolidation
(ii) Multifocal GGO with/without crazy paving sign
(iii) Reverse halo sign
Indeterminate feature
Nonspecific image for COVID-19
(i) Absence of typical feature
(ii) Presence of multifocal, diffuse, prehilar, or unilateral GGO with/without nonround, nonperipheral consolidation
(iii) Few very small GGO, nonround and nonperipheral distribution
Atypical appearance
Uncommonly or not reported feature of COVID-19
(i) Absence of typical and atypical features
(ii) Presence of single lobar or segmental consolidation, discrete small nodules, lung cavitation, and smooth interlobular septal thickening with pleural effusion
