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Table 1 Techniques used for the assessment of small airways disease in asthma

From: Small airways disease and severe asthma

Histologic Functional Radiographic
Lung biopsy Spirometry
FEF25-75
Plethysmography
RV, RV/TLC, PC20, FVC/SVC
Nitrogen washout
Fraction of exhaled nitric oxide
Impulse Oscillometry
High resolution computed tomography
Magnetic resonance imaging with [3]He