1. Division of Pediatric Cardiology, Department of Pediatrics, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
2. Advanced Imaging Research Center, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
3. Department of Radiology, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
4. Philips HealthCare, Rochester, MN 55902, USA