* Radiology and Nuclear Medicine Service, New Mexico VA Health Care System, 1501 San Pedro Blvd SE, Albuquerque, NM 87108; † Department of Medical Physics, 1530 Medical Science Center, 1300 University Avenue, University of Wisconsin, Madison, WI 53706; ‡ American College of Radiology, 1891 Preston White Drive, Reston, VA 20191; § State of Florida, 4052 Bald Cypress Way, BIN C21, Tallahassee, FL 32399-1741; ** DIQUAD, LLC, 222 Lakeview Court, Steger, IL 60475; †† New Jersey Department of Environmental Protection, Radiation Protection Programs, P.O. Box 415, Trenton, NJ 08625-0415; ‡‡ CDRH/FDA, U.S. Food and Drug Administration, 9200 Corporate Blvd, Rockville, MD 20850; §§ Duke University School of Medicine, DUMC Box 3155, 2214 Elder Street, Durham, NC 27710; *** Johns Hopkins Hospital, Department of Radiology, 601 N. Caroline Street, Baltimore, MD 21287-0856.
For correspondence contact: Fred A. Mettler, Jr., Radiology and Nuclear Medicine Service, NMVAHCS, 1501 San Pedro Blvd SE, Albuquerque, NM 87108, or email at [email protected].
(Manuscript accepted 1 July 2008)