Fig. 2From: Densitometric and local histogram based analysis of computed tomography images in patients with idiopathic pulmonary fibrosis a Sample slice for CT scan of a subject. b The same sample slice from a subject CT scan showing placement of fiducials for the training of the local histogram based objective method. Abbreviations: ground glass (GG), honeycombing (Hon), reticular (Ret), computed tomography (CT)Back to article page