Right Ventricle Lipid in Pulmonary Arterial Hypertension (PAH)

This study is using specialized heart imaging (cardiac MRI) to look at fat buildup in the right ventricle — the heart chamber that pumps blood to the lungs — in people with pulmonary arterial hypertension (PAH), a condition that causes dangerously high blood pressure in the lungs. Researchers want to understand how fat affects heart function in PAH. **You may be eligible if...** - You are 18 or older - You have a confirmed diagnosis of PAH (idiopathic, heritable, connective tissue disease-related, or drug/toxin-induced) - Your PAH medications have been stable for at least 3 months **You may NOT be eligible if...** - You cannot have an MRI (e.g., metal implants, pacemaker, severe claustrophobia) - Your PAH is caused by heart or lung disease (e.g., left heart disease, COPD, pulmonary embolism) - Your PAH medications are currently being adjusted Talk to your doctor to see if this trial is right for you.