ArticleInternational journal of chronic obstructive pulmonary disease2018
3D-measurement of tracheobronchial angles on inspiratory and expiratory chest CT in COPD: respiratory changes and correlation with airflow limitation.
Article in International journal of chronic obstructive pulmonary disease, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Investigation of the relationship between subcarinal angle values and mortality in chronic obstructive pulmonary disease (COPD) patients in the intensive care unit.Frontiers in medicine · 2026Article
- Article
- Measuring pulmonary function in COPD using quantitative chest computed tomography analysis.European respiratory review : an official journal of the European Respiratory Society · 2021Review
- Potential Value of Expiratory CT in Quantitative Assessment of Pulmonary Vessels in COPD.Frontiers in medicine · 2021Article
- Longitudinal Imaging-Based Clusters in Former Smokers of the COPD Cohort Associate with Clinical Characteristics: The SubPopulations and Intermediate Outcome Measures in COPD Study (SPIROMICS).International journal of chronic obstructive pulmonary diseaseArticle
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8 authors.
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Abstract
Purpose: To assess tracheobronchial angles and their changes on combined inspiratory and expiratory thoracic computed tomography (CT) scans and to determine correlations between tracheobronchial angles and several indices of chronic obstructive pulmonary disease (COPD). Materials and methods: A total of 80 smokers underwent combined inspiratory and expiratory CT scans. Of these, 65 subjects also performed spirometry and 55 patients were diagnosed with COPD. On CT scans, 3-dimensinal tracheobronchial angles (trachea-right main bronchus [RMB], trachea-left main bronchus [LMB], and RMB-LMB) were automatically measured by software. Lung volumes at inspiration and expiration were also automatically calculated. Changes in tracheobronchial angles between inspiration and expiration were assessed by the Mann-Whitney test. Correlations of the angles with lung volume, airflow limitation, and CT-based emphysema index were evaluated by Spearman rank correlation. Results: The trachea-LMB angle was significantly smaller and the RMB-LMB angle was significantly larger at expiration than inspiration ( Conclusion: Tracheobronchial angles change during respiration and are correlated with severity of COPD and emphysema.
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