1. From the Department of Radiology, Imaging Diagnostic Center, Hospital Clinic Barcelona, Villarroel 170, 08036 Barcelona, Spain (S.J.S., A.P.C., B.D.X., L.C., M.S.); Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Conn (M.V.R.); and Department of Radiology, Hospital de la Vall d’Hebron, Barcelona, Spain (I.V.).