Association Between MRI-Derived Right-to-Left Ventricular Volume Ratio and Regional Left Ventricular Myocardial Dysfunction in Patients With Pulmonary Arterial Hypertension.
Elevated RV/LV volume ratio in PAH is associated with spatially heterogeneous LV strain impairment, with the mid-septum being most vulnerable, and may serve as an imaging marker for assessing LV dysfunction.