Two major patterns of right ventricular (RV) overload are volume overload and pressure overload. This study aimed to investigate the differences of RV myocardial deformation associated with volume and pressure overload congenital heart diseases. Cardiac magnetic resonance feature tracking was applied to RV 4-chamber and short axis view in a subject group comprising 23 patients with repaired tetralogy of Fallot (rTOF), 23 patients with pulmonary hypertension (PH), and 23 age- and gender-matched normal controls. Results indicated that PH patients had most diminished RV longitudinal and circumferential strain. Patients with rTOF had reduced RV longitudinal strain but higher circumferential strain.
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