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Doses from Radiation exposure
The Task Group on Dose Calculations (DOCAL) is concerned with dosimetry for both external and internal radiation exposures. Recent work has provided input to Publication 95 on doses from the transfer of radionuclides in mothers’ milk and Publication 100 providing a new model of the human alimentary tract. Work for Publication 95 included consideration of doses to maternal breast tissue from radionuclides in milk and external doses to the child during breast-feeding and nursing, resulting from radionuclide retention in maternal tissues. Members of DOCAL have also been involved in the development of dosimetry for aircrew exposures and reconsideration of the most appropriate treatment of radiation weighting for neutrons. Work is also in progress on nuclear decay data to provide an update of Publication 38.
A major part of the DOCAL current work programme is the completion of reference anatomical models for the adult male and female. These voxel-based computational phantoms, based on segmented tomographic images, will replace the stylised phantoms used previously in organ and tissue dose calculations for external and internal radiations. Work is also in progress to improve the calculation of doses to regions within the skeleton that represent targets for the induction of bone cancer and leukaemia.
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