Asynchronous movement; BMI, body mass index; CAT, chronic obstructive pulmonary disease assessment test; COPD, chronic obstructive pulmonary disease; Chronic obstructive pulmonary disease (COPD); DLCO, carbon monoxide diffusing capacity of the lung; Diaphragm; FEV1, forced expiratory volume in 1 s; FEV1/FVC, forced expiratory volume in 1 s per forced vital capacity; FLASH, fast low angle shot; FOV, field of view; FRC, functional residual capacity; FVC, forced vital capacity; GOLD, Global Initiative for Chronic Pulmonary Obstructive Lung Disease; HASTE, Half Fourier Acquisition Single-shot Turbo spin Echo; ICC, intraclass correlation coefficient; ICS, inhaled corticosteroid; LAA, low attenuation area; LABA, long-acting ß-2 agonist; LAMA, long-acting muscarinic antagonists; LAV, low attenuation volume; LV, lung volume; Lung area; MDCT, multi-detector row computed tomography; MRI, magnetic resonance imaging; Magnetic resonance imaging (MRI); PFT, pulmonary function testing; Pulmonary function; RV, residual volume; RV/TLC, residual volume per total lung capacity; SSFP, steady-state free precession; TLA, total lung area; TLC, total lung capacity; UTE, ultrashort echo time