Abbreviations list
Ai = airway inner area;
Ao = total airway wall area;
Aw% = airway wall area percentage;
EB-OCT = endobronchial optical coherence tomography;
Ai3-6 = the mean airway inner area from the third to sixth generation of
bronchi;
Ai7-9 = the mean airway inner area from the seventh to ninth generation
of bronchi;
Aw%3-6 = the mean airway wall area percentage from the third to sixth
generation of bronchi;
Aw%7-9 = the mean airway wall area percentage from the seventh to ninth
generation of bronchi;
BSA = body surface area;
RB8 = anterior basal segment of the right lower lobe;
RB9 = lateral basal segment of the right lower lobe;
FEV1 = forced expiratory volume in one second;
FVC = forced vital capacity;
MMEF = maximal mid-expiratory flow;
MEF25 = Maximal expiratory volume when 25% of the lung
volume has been expired;
MEF50 = Maximal expiratory volume when 50% of the lung
volume has been expired;
Fres = resonant frequency;
R5 = airway resistance at 5 Hz;
R20 = airway resistance at 20 Hz;
R5-R20 = peripheral airway resistance;
X5 = pulmonary reactance at 5 Hz;
AX = area of reactance;
Z5 = respiratory impedance at 5 Hz.