J Korean Radiol Soc.  1996 Aug;35(2):201-204.

Inspiratory and Expiratory Pulmonary CT: Change of Bronchial and Accompanying Pulmonary Arterial Diameter During Respiration in Healthy Adult Men

• Jeon EY
• Kim CS
• Choi YW
• Jeon SC
• Yun HJ
• Kim SI
• Seo HS
• Hahm CK
• Park CK

Abstract

OBJECT: To evaluate changes in the diameter of bronchi and pulmonary arteries during respiration.
MATERIALS AND METHODS
The ratio of the diameter of matched inner bronchi and accompanying pulmonary arteries was calculated from full inspiration and expiration HRCT of healthy men.
RESULTS
In 106 pairs of matched bronchi and pulmonary arteries, the brohchial-arterial ratios were 0.61+/-0.18(upper lung), 0.72+/-0.21(lower lung), and0.65+/-0.20(total) at full inspiration and 0.51+/-0.32(upper lung), 0.52+/-0.15(lower lung), and 0.51+/-0.26(total) atfull expiration HRCT, denoting a statistically significant increase in bronchial diameter of the entire lung atfull inspiration. The inner diameter of the bronchus was larger than the diameter of the accompanying pulmonary artery by 0.1% at full expiration and 8.5% at full inspiration.
CONCLUSION
The result of this study would be helpful in understanding the physiology of the lung during respiration.

Keyword

Lung, anatomy; Lung, CT; Brohchi, CT; Bronchiectasis

MeSH Terms

Adult*
Arteries
Bronchi
Bronchiectasis
Humans
Lung
Male
Physiology
Pulmonary Artery
Respiration*