ABSTRACT
This chapter discusses the term “dosimetric models” encompasses a number of approaches to determining the absorbed dose to humans exposed to ionizing radiation from both internal and external sources. The purpose of a dosimetric model is to provide a framework in which an estimate of the absorbed dose to an organ or the entire body can be obtained for a particular exposure situation. Models are used when both external and internal radiation sources are being considered. Some dosimetrists often used a very simple representation of Standard Man in their lectures on internal dose calculations. The concept of a “standard man” for use in internal dose calculations originated more than 60 years ago. When early dosimetrists compared their dose estimates for inhaled or ingested radionuclides, they found that agreement was not always good. A major contribution was made to L.D. Marinelli’s approach radiation dosimetry by W. H. Ellett and his colleagues.
