Cardiac magnetic resonance imaging
Cardiac magnetic resonance imaging provides a direct evaluation of RV size, morphology and function, and allows noninvasive assessment of blood flow including stroke volume, CO, distensibility of PA, and RV mass . Cardiac magnetic resonance data may be used to evaluate right heart haemodynamics particularly for follow-up purposes. A decreased stroke volume, an increased RV end-diastolic volume, and a decreased LV end-diastolic volume measured at baseline are associated with a poor prognosis. Among the triad of prognostic signs, increased RV end-diastolic volume may be the most appropriate marker of progressive RV failure in the follow-up .