Internal dosimetry for radiation protection

The International Commission on Radiological Protection (ICRP) issued a major revision to its basic recommendation in 1977 (ICRP, 1977). These revisions resulted in a need to revise the documents dealing with radiation protection produced by other organizations [International Atomic Energy Agency, (IAEA)]. The revised recommendations, and updated metabolic models and dosimetric procedures also led to a review by ICRP of the concepts used in internal dosimetry and of its recommendation on internal dosimetry models and model parameters. This paper reviews the concepts, models, and model parameters used in that review, and describes how they can be used in internal contamination monitoring programs. Included in this paper is reference to ongoing work in improving the models and model parameters, particularly since 1979, and to ongoing work on extending these models to include age groups other than adults