ABSTRACT
Radiopharmaceuticals (RPs) are radiation-emitting substances used as radiotracers in radiation biology, in biomedical research, and in the practice of nuclear medicine (NM). There is no question about the usefulness of radiotracers in these fields of science. In the hands of well-trained persons, radiotracers are wonderful tools that can save time and effort in solving problems. When improperly used, however, radioactive materials can result in unnecessary exposures to personnel, patients, and visitors to the NM department of a hospital or clinic.
