Fig. 2
From: A comparison of visual and quantitative methods to identify interstitial lung abnormalities
On the vertical axis we present representative examples of (a) a subject with interstitial lung abnormalities identified by visual assessment but has less than 10 % of the lung with chest CT attenuation values between −600 and −250 HU (HAA) (7.5 % HAA) and (b) a subject having > 10 % of the lung with chest CT attenuation values between −600 and −250 HU (HAA) (10.8 %) but not identified as having interstitial lung abnormalities identified by visual assessment. Each row represents data from a single subject. On the horizontal axis we present axial high resolution chest computed tomographic (HRCT) images (1 [approximately at the level of the carina] and 2 [approximately at the level of the right inferior pulmonary vein])