Fig. 8From: Quantitative CT analysis using functional imaging is superior in describing disease progression in idiopathic pulmonary fibrosis compared to forced vital capacityHypothesis of IPF disease manifestation and progression in terms of FRI parameters. More severe IPF appears to be associated with relatively larger airways. This supports the rationale that the intra-thoracic pressure tends to redistribute due to the stiffness of the alveolar region and subsequently dilate the central and distal airwaysBack to article page