Acute respiratory distress syndrome CT

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1], Associate Editor(s)-in-Chief: Brian Shaller, M.D. [2]

Overview

There are no findings on Computed tomography (CT) that are diagnostic of ARDS, however, CT may be used to better define the extent of lung injury or identify potential underlying causes of ARDS.

CT

CT may also be used in the evaluation of patients with ARDS. Although there are no CT findings that are diagnostic of ARDS, some common features include:

• Pulmonary opacification that appears more dense in the dependent lung zones
• Ground-glass opacities that may either be patchy or diffuse
• Islands of normal-appearing lung parenchyma

ARDS on chest CT scan of a 50-year-old woman with sepsis and rapidly progressive multi-organ failure