The Correlation between Tracheobronchial Variation and Chronic Obstructive Pulmonary Disease
Objective In order to explore the correlation between tracheobronchial variation and COPD,MSCT image post-processing was used to collect the characteristics and parameters of tracheobronchial variation in clinically diagnosed patients with COPD by PFT.Methods Imaging data of 1132 patients clinically diagnosed as COPD were retrospectively collected.CT scanning data were used to determine tracheobronchial variation and classification,and to measure LAA%,LA,WT,and WA%of the variable side and the contralateral side.And the correlation analysis is carried out.Results 1.General data and CT quantitative parameters:there was no statistical significance between the four types of tracheobronchial variation and age(all P>0.05).CT quantitative parameters of tracheal diverticulum LAA%-950 and LAA%-910 were significantly different from the other three tracheobronchial variants(all P<0.05),while there was no significant difference among the other three tracheobronchial variants(all P>0.05).2.CT quantitative parameters and bronchial parameters:CT quantitative parameters LAA%-950 and LAA%-910 of tracheal bronchus,accessory cardiac bronchi and abnormal segments of the upper lobes of both lungs and bronchial parameters LA,WT,WA%of the variant side and the contralateral side were statistically significant(all P<0.05).There was no significant difference between the lungs around LAA%-950 and LAA%-910 in the tracheal diverticulum(P>0.05).3.Correlation analysis between CT quantitative parameters and bronchial parameters:The LAA%-950 and LAA%-910 of tracheal bronchus,accessory cardiac bronchi,and abnormal segments of the upper lobes of both lungs variant side were positively correlated with WT and WA%,and negatively correlated with LA.Conclusion The degree of emphysema and airway wall thickness were more serious on the variant side of tracheobronchial variation than on the contralateral side.And patients with tracheobronchial variations may be more susceptible to COPD.