1Radiology, University of Wisconsin, Madison, WI, United States, 2Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, TN, United States, 3Pathology, University of Wisconsin, Madison, WI, United States, 4Tacoma General Pathology, Tacoma, WA, United States, 5Radiology, University of California, San Diego, CA, United States, 6Surgery, University of Wisconsin, Madison, WI, United States, 7Virginia Commonwealth University, Surgery, VA, United States, 8Surgery, University of California, San Diego, CA, United States, 9Computational and Applied Statistics Laboratory, University of California, San Diego, CA, United States, 10Medical Physics, University of Wisconsin, Madison, WI, United States, 11Biomedical Engineering, University of Wisconsin, Madison, WI, United States, 12Medicine, University of Wisconsin, Madison, WI, United States, 13Emergency Medicine, University of Wisconsin, Madison, WI, United States