Wagner and Jamieson reported a classification for evaluating pulmonary contusion in a trauma patient based on chest CT images. The authors are from the Uniformed Services University of the Health Sciences at Bethesda.

Patient selection: trauma


Exam: chest CT



(1) total air space

(2) volume of lung showing consolidation or laceration


percent of total air space =

= (volume of lung showing consolidation or laceration) / (total air space) * 100%


Percent of Total Air Space


Mechanical Ventilation

< 19%

Grade 1


19 to 28%

Grade 2

half to two-thirds

> 28%

Grade 3




• In the study of Mommsen et al, the area under the ROC curve for ARDS was 0.63 and for mortality was 0.69.

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