1Radiology, Liver Imaging Group, University of California, San Diego, San Diego, CA, San Diego, CA, United States, 2Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, University of California, San Diego, San Diego, CA, 3Gastroenterology, Rady Children's Hospital San Diego, San Diego, CA, 4NAFLD Translational Research Unit, Division of Gastroenterology, University of California, San Diego, La Jolla, CA, 5Radiology, University of Wisconsin - Madison, Madison, WI, 6Medical Physics, University of Wisconsin - Madison, Madison, WI, 7Biomedical Engineering, University of Wisconsin - Madison, Madison, WI, 8Medicine, University of Wisconsin - Madison, Madison, WI, 9Emergency Medicine, University of Wisconsin - Madison, Madison, WI, 10Radiology, Mayo Clinic, Rochester, MN