title: [Radiological protection: its concept and principles].
abstract: Main concepts and principles of radiation protection system are reviewed. Especially, the concept of LNT model and its background are discussed. Also, the major principles, i.e., (i) justification, (ii) optimization, and (iii) the application of dose limits, are reviewed with emphasis on the existing situation, which is mostly related to the current situation in Fukushima.
authors.affiliation: Research Center for Radiation Protection, National Institute of Radiological Sciences.
authors.forename: Kazuo
authors.initials: K
authors.lastname: Sakai
mesh_terms: D004307:Dose-Response Relationship, Radiation; D006801:Humans; D011829:Radiation Dosage; D011832:Radiation Injuries / Q000145:classification; D011835:Radiation Protection