has retired as a Professor of Radiological Sciences at Baylor College of Medicine where he was employed for 36 y. He received his doctorate from the University of Texas Graduate School of Biomedical Sciences / M.D. Anderson. He is certified in diagnostic imaging physics by the American Board of Radiology and the American Board of Medical Physics and has served these organizations on numerous national committees and task groups. He was co-chair of the scientific committee that produced NCRP Report No. 147, Structural Shielding Design for Medical X-Ray Imaging Facilities (2004). Dr. Archer is a Distinguished Emeritus member of the Council and has been elected to fellowship in the American College of Medical Physics, the American Association of Physicists in Medicine, and the American College of Radiology.