PAH	pulmonary arterial hypertension
SSc	systemic sclerosis
RV	right ventricle
PVOD	pulmonary veno-occlusive disease
PH	pulmonary hypertension
CAD	coronary artery disease
HFpEF	heart failure with preserved ejection fraction
HFrEF	heart failure with reduced ejection fraction
CTEPH	chronic thromboembolic pulmonary hypertension
ILD	interstitial lung disease
HRCT	high-resolution computed tomography
FVC	forced vital capacity.