1 Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
2 Laboratory for Percutaneous Surgery, Queen's University, Kingston, Ontario, Canada.
3 Pixel Medical, Kingston, Ontario, Canada.
4 Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
5 Division of Cardiovascular Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania.
6 École de Technologie Supérieure, Montreal, Quebec, Canada.
7 Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.
8 Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Division of Cardiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.