Department of Radiology and Imaging, Hospital for Special Surgery, New York, NY

C.M.S.: Book royalties Lippincott Williams & Wilkins, Paid consultant OSSIO Ltd.

Address correspondence and reprint requests to Carolyn M. Sofka, MD, FACR, Department of Radiology and Imaging, Hospital for Special Surgery, 535 East 70th St, New York, NY 10021. E-mail: [email protected].