Fig. 3From: Densitometric and local histogram based analysis of computed tomography images in patients with idiopathic pulmonary fibrosis a Representative CT images from subjects with less severe IPF (patient 1) and more severe IPF (patient 2). b Overlay of categorization of lung parenchyma into radiographic subtypes using the local histogram analysis and distance based analysis for each subject. c Legend for radiographic subtypesBack to article page