Comparison of double dosimetry algorithms for estimating the effective dose in occupational dosimetry of interventional radiology staff

Hannu Järvinen, N. Buls, Peter Clerinx, S. Miljanić, Denisa Nikodemova, M. Ranogajec-komor, Lara Struelens, F. d'Errico

    Research outputpeer-review


    'Double dosimetry' i.e. measurement with two dosemeters, one located above the protective apron and one under has been recommended in interventional radiology (IR) to determine the effective dose to staff. Several algorithms have been developed to calculate the effective dose from the readings of the two dosemeters, but there is no international consensus on what is the best algorithm. In this work, a few of the most recently developed algorithms have been tested in typical IR conditions. The effective dose and personnel dosemeter readings were obtained experimentally by using thermoluminescent dosemeters in and on a Rando-Alderson phantom provided with a lead apron. In addition, the effective dose and personnel dosemeter readings were calculated by the Monte Carlo method for the same irradiation geometry. The results suggest that most of the algorithms overestimate effective dose in the selected IR conditions, but there is also a risk of underestimation by using the least conservative algorithms. Two of the algorithms seem to comply best with the chosen criteria of performance, i.e. no underestimation, minimum overestimation and close estimation of effective dose in typical IR conditions. However, it might not be justified to generalise the results. It is recommended that whenever personnel doses approach or exceed the dose limit, IR conditions should be further investigated and the possibility of over- or under-estimation of effective dose by the algorithm used should be considered.

    Original languageEnglish
    Pages (from-to)80-86
    Number of pages7
    JournalRadiation protection dosimetry
    Issue number1
    StatePublished - Aug 2008


    The aim of this work was to compare a few of the most recently developed algorithms experimentally and by calculation in typical IR conditions. This work has been carried out by Working Group 9 (Radiation protection dosimetry of medical staff) of the CONRAD project, which is a Coordination Action supported by the European Commission within its 6th Framework Programme(6,7). This study is part of EURADOS CONRAD Coordination action and co-funded by the European Commission under the Euratom Research and Training Programme on Nuclear Energy within the Sixth Framework Programme (2002–2006).

    FundersFunder number
    Euratom 6th Framework Program6,7

      ASJC Scopus subject areas

      • Radiological and Ultrasound Technology
      • Radiation
      • Radiology Nuclear Medicine and imaging
      • Public Health, Environmental and Occupational Health

      Cite this