10 CFR Part 35: changes to the NRC rule governing the medical use of radioisotopes and implications for radiologic practice.

In the spring of 2005, the US Nuclear Regulatory Commission completed its revision of Title 10, Part 35, of the Code of Federal Regulations, its regulatory framework for the medical use of radioisotopes. Because of the complexity of the regulation and the lengthy period over which the revisions were accomplished, many radiologists remain uninformed regarding changes in the rule. This article highlights some of the more important of these changes as they relate to the practice of radiology, radiation oncology, nuclear medicine, and medical physics.