The Application Value Of MSCT Imaging Technology In The Diagnosis Of Bronchial Variation Associated With COPD

Objective:The purpose of this study was to explore the application value of multiple post-processing techniques of MSCT in the diagnosis of bronchial variants associated with COPD.Methods:The segmental bronchial branches of 400 cases of normal chest group were retrospectively analyzed,and the bronchial variation rate of 400 cases of normal group and 200 cases of COPD group was compared.Four post-processing techniques of MPR,MinIP,VR and CTVB were used to measure the lumen minimum diameter(LDmin),lumen maximum diameter(LDmax),lumen area(LA)and the length from superior segmental airway(LB*-B6)at the opening of the subsuperior segmental airway(B*)in 47 cases of the normal group.Four techniques were measured simultaneously to visualize the lumen average diameter(LDAvg)and the length of the most distal lumen of B*(LB*),and their diagnostic efficiency was compared.Results:The segmental bronchial branches of the normal group showed strong individual differences.The incidences of B*and the right B*in the COPD group were higher than those in the normal group,and the difference was statistically significant(P<0.05).LB*B6 on the left side of B*was larger than the right side,and the difference was statistically significant(P<0.05).The differences between MPR and VR,MinIP,and CTVB and between MinIP and VR and CTVB were statistically significant for both LDAvg and LB*(P<0.05).Conclusion:MSCT multiple post-processing techniques allow visualization and quantitative assessment of bronchial variation,provide normal reference values for quantitative CT studies of bronchial variation,and confirm a correlation between bronchial variation and the development of COPD.