Many patients with repaired Tetralogy of Fallot require additional pulmonary valve replacement surgery later in life. Previous 4D flow MRI studies have suggested that right ventricular kinetic energy may be a useful biomarker in this patient population. In this long-term follow-up study, kinetic energy measurements derived from 4D flow MRI were compared with each patient’s need for pulmonary valve replacement surgery in the next decade. Patients who did not need surgery showed significantly higher stroke volume index normalized by kinetic energy than those who required surgery, suggesting this parameter may have some prognostic value in this application.
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