HRCT can be rapidly and safely deployed has enabled COPD research to move beyond FEV1 by facilitating and amplifying clinical phenotyping measurements, providing quantitative information, and detecting significant responses to therapy even in the absence of significant FEV1 improvements.~We explore the HRCT phenotype of the combined COPD assessment staging system,and found that:~Airway remodeling occurs in COPD patients. CT shows varying degrees of bronchial wall thickness, area increasing and emphysema as the new GOLD classification Group A-D arising.~The GOLD Combined assessment staging system helps doctors choose an individualized treatment for the COPD patients
To explore the HRCT phenotype of the combined COPD assessment staging system