Detailed analysis of the density change on chest CT of COPD using non-rigid registration of inspiration/expiration CT scans

Conclusions Detailed analysis of density change at inspiration and expiration CT of COPD can provide new insights into pulmonary functional impairment in each lung area. Key Points • COPD patients show significant air trapping in the lung. • The air trapping index is a comparable parameter to other CT indices. • Air trapping of emphysema and hyperinflated lung areas relates to functional loss. • The emphysema area changes more, with less air trapping than other areas.
Source: European Radiology - Category: Radiology Source Type: research