Lung computed tomography images of a sheep with acute respiratory distress syndrome induced by oleic acid. These images show the change in image quality due to the different tube current-exposure time products (mAs) applied. (A) 140 mAs. (B) 60 mAs. (C) 15 mAs. (D) 7.5 mAs. Despite increased image noise, the interface between lung and surrounding structures can easily be recognized.