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Estimation of lung growth using computed tomography.
P A de Jong1, Y Nakano, M H Lequin
1Dept of Paediatric Pulmonology, Sophia Children's Hospital, Erasmus Medical Centre Rotterdam, Rotterdam, The Netherlands.
The European Respiratory Journal
|September 4, 2003
Summary
Computed tomography (CT) can monitor normal lung growth by estimating lung weight and gas volume. This imaging technique reveals changes in lung expansion throughout childhood and adolescence.
Area of Science:
- Pediatric Pulmonology
- Radiology
- Human Anatomy
Background:
- Normal lung growth involves alveolar addition until age 2, followed by dimension increases.
- Understanding lung development is crucial for diagnosing and managing respiratory conditions.
Purpose of the Study:
- To investigate if computed tomography (CT) can effectively monitor normal lung growth.
- To assess the correlation between CT-derived lung parameters and established growth patterns.
Main Methods:
- CT scans were performed on 35 children (15 days to 17.6 years).
- Lung density was measured to estimate gas volume per gram of lung tissue.
- CT-measured lung weight and gas volume were correlated with predicted values.
Main Results:
- Lung expansion showed a median value of 1.86 mL/g at 15 days, decreasing to 0.79 mL/g by 2 years.
- Lung expansion increased to 5.07 mL/g by 17 years.
- CT-derived lung weight and gas volume correlated well with predicted values.
Conclusions:
- Computed tomography is a viable tool for estimating lung weight, gas volume, and expansion in normal pediatric lungs.
- The observed increase in lung expansion post-2 years suggests progressive alveolar growth.
- CT imaging provides valuable insights into dynamic lung development during the growth period.