1 From the Department of Radiology, University Clinical Centre in Gdansk, 7 Debinki Street, Gdansk, Poland 80-211 (J.N.); Institute of Radiology, St Luke's Medical Center Global City, Taguig, Philippines (T.C.); Division of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel (M.K.); Department of Radiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada (P.K.); and Mallinckrodt Institute of Radiology, Washington University in St Louis, St Louis, Mo (S.J.K.).