1Radiological Sciences, University of California, Irvine, Orange, CA, United States, 2Orthopaedic Surgery, Saitama City Hospital, Saitama, Japan, 3Radiology, St. Luke's International Hospital, Tokyo, Japan, 4John Tu and Thomas Yuen Center for Functional Onco-Imaging, University of California, Irvine, Orange, CA, United States, 5Orthopaedic Surgery, University of California, Irvine, Orange, CA, United States