1. From the Department of Radiology, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Dr, MC 7800, San Antonio, TX 78229 (R.T., A.K.S., V.S.K.); Department of Radiology, Mount Sinai Icahn School of Medicine, New York, NY (A.S.S.); Department of Radiology, Mayo Clinic at Scottsdale, Scottsdale, Ariz (C.O.M.); and Department of Radiology, University of Texas MD Anderson Cancer Center, Houston, Tex (S.R.P.).