Abbreviations
BAL bronchoalveolar lavage
CT computerized tomography
FeNO Fraction expired nitric oxide
FEV­1­ forced expired volume in one second
­FEV­1­/FVC forced expired volume in one second/forced vital capacity
FVC forced vital capacity
HHe-3 hyperpolarized helium-3
GINA Global Initiative for Asthma
ICS inhaled corticosteroids
LABA long-acting beta agonists
MCID Minimal clinically important difference
MR magnetic resonance
MRI magnetic resonance imaging
Vdef % ventilation defect percent
VH ventilation heterogeneity
VHI % ventilation heterogeneity index percent
VVI % ventilated volume percent