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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Intercomparison on measurements of the quantity personal dose equivalent, HP(0.07), by extremity ring dosemeters in medical fields


Journal title : Radiation Measurements
Volume : 43
Issue : 2-6
Pagination : 565-570
Publication date : 30/06/2008

Summary

In the framework of the CONRAD project, the EURADOS WG9 organized an intercomparison of extremity dosemeters that are used in a variety of medical fields. The overall objective of the intercomparison was to verify the performance of different extremity ring dosemeters to measure the quantity Hp(0.07) in photon and beta reference fields as well as in realistic fields in interventional radiology and nuclear medicine. The selection of the participating services has been done in a way to have a good representation of different types of detectors, filter materials and filter thicknesses that are used in Europe. All the irradiations have been performed on the ISO rod phantom. For the reference fields, the reference values of Hp(0.07) have been determined by the irradiation laboratories with traceability to primary calibrations, in agreement with the relevant standards. For the realistic fields, the reference values have been obtained with the aid of Monte Carlo simulations. The vast majority of the services fulfill the accuracy requirements according to the European Technical Recommendations for the photon and realistic interventional radiology fields. However, only a limited number of services fulfill these requirements in all tested beta irradiation configurations.


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