1. From the Department of Radiology, UT Southwestern Medical Center, 5323 Harry Hines Blvd, E6-230-BF, Dallas, TX 75390-8896 (D.T.F., K.V., A.P.L.); Department of Radiology, Mayo Clinic, Jacksonville, FL (M.P.C.); Department of Radiology, Mayo Clinic, Phoenix, AZ (N.D.); and Department of Radiology, Jefferson Health New Jersey, Thomas Jefferson University, Cherry Hill, NJ (S.K.R.).