Global and Regional Myocardial Strain and Power Output In Patients With Single Ventricles Using Novel MRI Techniques

Exclusion Criteria

• •Study subjects will be excluded if there are any contraindications to MRI including permanent pacemaker, ICD, retained permanent wires, cerebral aneurysm clips, neurostimulators, insulin or infusion pumps, implanted drug infusion devices, bone growth/fusion stimulators, or cochlear implants.
• •In addition, patients with implanted hardware that may lead to inadequate imaging, such as steel coils or ventricular septal defect occluder devices, will be excluded.
• •Finally, patients with developmental delay or physical limitations precluding cooperation with the MRI or exercise test or patients with claustrophobia will be excluded. Patients will be asked if there is any chance that they are pregnant. If they are possibly pregnant, they will be excluded.