A portion of the information in the article about Roger W. Howell, PhD, recipient of the Loevinger–Berman Award for Excellence in Medical Internal Radiation Dosimetry, was erroneous. A corrected version of the article now appears in the Newsline section of the SNM journals Web site at http://jnm.snmjournals.org/cgi/reprint/45/11/27N. The Newsline editor regrets this error and again congratulates Dr. Howell on receipt of this prestigious award.