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Kaplan-Meier survival curves in a cohort of 49 patients with pulmonary arterial hypertension for both two-dimensional and three-dimensional cardiac magnetic resonance imaging (CMR) measures. A, Tricuspid annulus plane systolic excursion (TAPSE) of ≤18 mm (P < 0.01). B, Right ventricle (RV) ejection fraction (EF) of ≤40% (P = 0.11). C, Ventricular mass index (VMI) of ≥0.55 (P = 0.32). D, Stroke volume index (SVI) of ≤37.7 mL/m2 (P = 0.14).
