It is estimated that approximately 1 million people employed in health facilities around the world are exposed to radiation in the course of their work duties. This makes the radiation safety of healthcare workers an important consideration. The International Labor Organization regards any exposure to ionizing radiation received at the workplace as occupational exposure. A healthcare worker’s total radiation exposure also includes natural background exposure received during working hours. However, since the latter is a consequence of living on Planet Earth and occurs regardless of occupation, it is not the responsibility of the employer and is not subject to regulatory controls.