This study investigates damage of the right cardiac chamber in adult patients with a congenital heart defect involving the pulmonary valve (the heart valve between the right cardiac chamber and the lungs). The investigators want to investigate if novel, less invasive techniques are feasible to assess damage of this right cardiac chamber, to improve follow-up and timing of intervention (valve replacement) in this group of patients.
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histopathology: percentage of fibrosis in biopsies.
Timeframe: 6 months
T1 time in ms
Timeframe: before and 6 months after valve replacement
T1 rho time in ms
Timeframe: before and 6 months after valve replacement
Late gadolinium enhancement
Timeframe: before and 6 months after valve replacement