Table 2.

Objectives and relative value of multi-modality imaging in the assessment of right ventricular outflow tract, pulmonary valve, main and branch pulmonary artery obstruction in repaired ToF.

	Echocardiography	CMR	Cardiac CT	Cardiac catheterization and angiography
Severity of RVOTO	✓✓✓	✓✓✓	✓	✓✓
Level of RVOTO	✓✓	✓✓	✓✓✓	✓✓
Quantify RV function	✓✓	✓✓✓	✓	✓
Assess associated valve lesions	✓✓✓	✓✓		✓
Planning percutaneous interventions	✓	✓✓	✓✓✓	✓✓✓

CMR, cardiac magnetic resonance; CT, computed tomography; RV, right ventricle; RVOTO, right ventricular outflow tract obstruction.