1. From the Department of Radiology, Mayo Clinic Arizona, 5777 E Mayo Blvd, Phoenix, AZ 85054 (P.M.P., M.B.G.); Department of Medicine (F.F.F.) and Department of Laboratory Medicine, Division of Anatomic Pathology (Y.M.B., M.L.S., B.T.L., H.D.T.), Mayo Clinic Scottsdale, Scottsdale, Ariz; and Southwest Medical Imaging, Scottsdale, Ariz (H.J.H.).