Nearly every IAEA Member State uses ionizing radiation to some extent for social, health, or economic benefit. A number of X-ray machines are used for medical purposes even in the least developed countries of the world. This fact alone suggests a continuing need for national and international activities in the field of radiation protection. Radiation protection services provided by the Agency can be grouped into four general areas: Operational radiation protection. Personnel dosimetry services. Training in radiation protection. Advisory support services