Bronchoarterial Ratio and Bronchial Wall Thickness on High-Resolution CT in Asymptomatic Subjects: Correlation with Age and Smoking

The bronchoarterial ratio is influenced by aging. The normal bronchoarterial ratio in a substantial number of subjects older than 65 years overlaps with the ratio considered to represent bronchiectasis. Thus, when this ratio is used for the quantitative analysis of pulmonary and cardiovascular disease, the influence of age should be considered.