1. From the Division of Emergency/Trauma Radiology, Department of Radiology, McMaster University, Hamilton General Hospital, 237 Barton St E, Hamilton, ON, Canada L8L 2X2 (M.N.P.); Department of Diagnostic Radiology, University of Maryland Medical Center, R. Adams Cowley Shock Trauma Center, Baltimore, Md (D.D.); Department of Radiology, Mayo Clinic School of Medicine, Scottsdale, Ariz (C.O.M.); Department of Radiology, Brigham and Women’s Hospital, Brookline, Mass (N.T.); Mallinckrodt Institute of...