Study of Cardiac MRI in the Follow up Assessment of Patients With PAH (EVITA)

"Right ventricular contouring and indexed aortic flow measurement from cMRI will be performed locally with the dedicated software used in clinical practice by the physicians of each centre. Cardiac index and RVEF will be derived from these measures. MRI interpretation will be performed blind with respect of clinical and RHC data.~A self-administered questionnaire made up of 2 Likert scales will be given to all patients on visits V1, V2 or V3 and V9.~To constitute a biobank for diagnosis and prognosis purposes blood samples will be taken at visits V1, V2 or V3 and V9."