Abstract:Background:Pulmonary hypertension (PH) is an uncommon pathology; its etiological mechanisms remain largely enigmatic and inadequately elucidated. This study aimed to assess the functional parameters of the right ventricle, including myocardial velocity, ejection fraction, enddiastolic volume, and end-systolic volume, utilizing cardiac magnetic resonance imaging (CMRI) as the evaluative modality. Methods: This descriptive observational study was conducted on thirty patients diagnosed with pulmonary hypertension. The studied cases were subjected to the following: detailed history taking, including age, gender, BMI, family history, and clinical history, as well as MRI. Results: Significant negative correlations were observed between tau and SIR (r = -0.436, P = 0.016) as well as RVESVI (r = -0.445, P = 0.014). There were insignificant correlations between tau and other parameters (TRPG, RVEDA, RVESA, RVFAC, TAPSE, PVR, cardiac index, tau, EF, mass, end-diastolic volume, end-systolic volume, SV, RVEDVI, RVSVI, end-systolic elastance, PAC, circumferential diastolic time, circumferential systolic time, circumferential R-R interval, circumferential deceleration time of early diastolic strain rate, circumferential early diastolic strain rate, and circumferential peak systolic strain rate). Conclusion: Using cardiac MRI, a high prevalence of right ventricular dysfunction was found in patients with PH. This was evidenced by a reduced right ventricular ejection fraction and an altered right ventricular end-diastolic volume index. Our findings show the importance of assessing right ventricular function and its relationship with left ventricular metrics. Cardiac MRI plays a crucial role in the early identification and comprehensive evaluation of right ventricular dysfunction in these patients