Qualification of a numerical anthropomorphic model dedicated to radiological accidents

In the case of accidental exposure to ionising radiation, estimation of the ahsorhed dose in the organism is an important indicator for evaluating the hiological consequences. To complete the clinical and hiological investigations, physical dosimetry methods can he used to provide an estimate of the absorhed dose and its distribution in the organism. This article describes the development of calculation tools in physical dosimetry, in particular a numerical anthropomorphic pbantom which can he adapted to each individual. A standard model was developed from the data avaiiahle in the ICPR Publication 23. A set of tests was carried out with the model dimensions heing modifed to study the effect of morphology on the dose calculation. A comparison was made with another standard model used in internal dosimetry. These studies highlight the parameters to he taken into account in the model, depending on whether the accident is local or global. Caracterisation d'un modele anthropomorphe numerique pour la reconstitution d'accident radiologique.