Towards a proposition of a diagnostic (dose) reference level for mammographic acquisitions in breast screening measurements in Belgium

Kristien Smans, Hilde Bosmans, M. Xiao, A.K. Carton, Guy Marchal, Filip Vanhavere

    Research outputpeer-review


    A diagnostic reference level (DRL) is a dose level for a typical X-ray examination of a group of patients with standard body sizes and for broadly defined types of equipment. These levels are expected not to be exceeded for standard procedures when good and normal practice regarding diagnostic and technical performance is applied. In this paper, we have calculated DRLs for screening mammography in Belgium. The 95th percentile of the mean average glandular dose is 2.46 mGy. The DRL based on polymethyl methacrylate (PMMA) measurements was 2.08 mGy. Correlation coefficient (R) between doses from patient studies and phantom studies was 0.90, with an average underestimation of the phantom measurements of 15% for systems that use only Mo/Mo anode/filter. For the centres that use other anode/filters, there is not enough scientific evidence that a single phantom measurement of a standard PMMA block is representative for the patient dose.
    Original languageEnglish
    Pages (from-to)321-326
    JournalRadiation protection dosimetry
    Issue number1-3
    StatePublished - 7 Feb 2006
    EventDIMOND-project: Proceedings on Radiation Protection and Dosimetry - Dimond, Leuven
    Duration: 25 Mar 200427 Mar 2004

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