Fig. 4From: Right ventricular energetic biomarkers from 4D Flow CMR are associated with exertional capacity in pulmonary arterial hypertensionRight ventricular (RV) direct flow, retained inflow, residual volume, fractional flow ratio, RVEF), RV GLS, TAPSE) and right atrial (RA) area to detect A RV remodelling (RVEDV)/LVEDV ratio > 1.27), B impaired exercise capacity (% predicted peak VO2 ≤ 65%), and C impaired exercise capacity (VE/VCO2 slope ≥ 36). Fractional flow ratio RV direct flow/RV residual volume, RVEF right ventricular ejection fraction, GLS global longitudinal strain, TAPSE tricuspid annular plane systolic excursion, RVEDV right ventricular end-diastolic volume, LVEDV left ventricular end-diastolic volume, VO2 oxygen uptake, VE minute ventilation, VCO2 carbon dioxide output, AUC area under curveBack to article page