CXRs were acquired as computerized or digital radiographs following the local protocols. All CXR studies were analyzed by two observers (MC and MG with more than 5 years’ experience) using a picture archiving and communication system (PACS) workstation [Carestream Vue PACS v11.3.4 (Carestream Health, Inc, Rochester, NY)]. In the few cases of disagreement, the decision was reached by consultation with a senior radiologist (RF with more than 10 years’ experience).
CXRs were evaluated using two separate scores: the first [14 (link)] measured the involvement of each lung field (upper, middle and lower) in a binary manner, ranging from 0 to 6; whereas, the second, the so-called “Brixia score” [18 (link)], assessed the severity of the involvement of each lung field on a scale from 0 to 3, for a total score from 0 to 18. The presence of pleural effusion and reduction of lung volumes were also evaluated.
CXRs were evaluated using two separate scores: the first [14 (link)] measured the involvement of each lung field (upper, middle and lower) in a binary manner, ranging from 0 to 6; whereas, the second, the so-called “Brixia score” [18 (link)], assessed the severity of the involvement of each lung field on a scale from 0 to 3, for a total score from 0 to 18. The presence of pleural effusion and reduction of lung volumes were also evaluated.