3D CT-Based quantification of airway structural changes during asthma exacerbations: a retrospective observational...

Area of Science:

• Pulmonology
• Radiology
• Medical Imaging

Background:

• Traditional mucus plug assessment relies on subjective 2D CT interpretation by experts.
• This requires extensive experience and knowledge of airway anatomy.
• A novel semi-automated 3D-CT approach is proposed for routine clinical use.

Purpose of the Study:

• To demonstrate the feasibility and clinical relevance of semi-automated 3D-CT for assessing mucus plug burden and asthma exacerbation severity.
• To evaluate the utility of 3D-CT in routine clinical practice without expert readers.

Main Methods:

• Exploratory, single-center, retrospective study of 23 asthma patients with exacerbation history.
• Semi-automated quantification of bronchial endpoint count and volume using 3D-CT in stable and exacerbation phases.
• Calculation of percentage change and correlation with mucus plug scores and arterial blood gases.

Main Results:

• Bronchial endpoint count and volume were significantly lower during exacerbations.
• Both parameters showed significant negative correlation with mucus plug scores during exacerbations.
• Percentage change in bronchial parameters correlated with mucus plug scores and P/F ratio.

Conclusions:

• Semi-automated 3D-CT provides objective, reproducible quantification of airway changes in asthma exacerbations.
• 3D-CT biomarkers reflect mucus plug burden and correlate with oxygenation status.
• This method offers complementary structural information for understanding exacerbation pathophysiology.