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Radiation Protection Dosimetry Advance Access originally published online on April 21, 2008
Radiation Protection Dosimetry 2008 129(1-3):199-203; doi:10.1093/rpd/ncn152
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Results of a European dose survey for mammography

K. Michielsen1,*, J. Jacobs1, K. Lemmens1, J. Nens1, J. Zoetelief2, K. Faulkner3 and H. Bosmans1

1 Leuven University Centre for Medical Physics in Radiology, Leuven, Belgium
2 Technical University Delft, Delft, The Netherlands
3 Quality Assurance Reference Centre, Wallsend, UK

* Corresponding author: koen.michielson{at}uz.kuleuven.be

For the dose study, a semi-automated method of data collection is used in this study. The participating centres were asked to fill out a spreadsheet with all necessary data and return it. For direct digital (DR) systems, the relevant data available in the DICOM header were used. All data is automatically added to a database and processed. The data were used to calculate the mean glandular dose for every image and for different thicknesses of polymethyl methacrylate phantoms using available conversion factors. Second-degree polynomials were fitted to the patient dose data and a reference dose curve was constructed for a range of thicknesses instead of a dose reference level at a single point. The dose reference curve rises from 1.57 mGy for a thickness of 30 mm to 2.50 mGy for 55 mm and 3.83 mGy for 75 mm. The results show centres that exceed this curve lie only in the lower or higher range of thicknesses and would remain undetected using a dose reference value in a single point. This gives better information to radiographers on where there is room for improvement of the dose levels in their system.


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 Radiat Prot DosimetryHome page
J. Zoetelief and K. Faulkner
SAFETY AND EFFICACY FOR NEW TECHNIQUES AND IMAGING USING NEW EQUIPMENT TO SUPPORT EUROPEAN LEGISLATION: AN EU COORDINATION ACTION
Radiat Prot Dosimetry, September 7, 2008; (2008) ncn242v1.
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