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FP5

EPR Dose Reconstruction with Teeth: in situ Measurements, Determination of Organ Doses, and Application at Mayak (DOSREC), Final report (summary)

Project ID: FIGD-CT-2000-00083
Funded under: FP5-EAECTP C

Abstract

The general objectives of the project were:
- to further develop the methodology of reconstruction of external radiation exposure by electron paramagnetic resonance (EPR) of tooth enamel and its application to an improvement of the dosimetry for the cohort of Mayak workers, and
- the exploration of implications of improved estimates of external doses on the cancer radiation risk per unit dose among the cohort.
To attain these objectives, four work packages were designed with the following main contents:
- exploration of the basic concepts of an EPR device for in situ dosimetry (work package 1);
- determination of the dependence of absorbed dose in teeth in a full-scale head phantom on energy and angular characteristics of a photon field to which the phantom is exposed and derivation of absorbed doses in other organs under these exposure conditions (work package 2);
- application of the method to workers of Mayak and derivation of conversion factors from absorbed dose in tooth enamel to organ doses for specified work areas (work package 3); and
- analysis of mortality among the Mayak worker cohort due to cancer in organs with dominantly external exposures (work package 4).

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