Journal of Medical Physics
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TECHNICAL NOTE
Year : 2015  |  Volume : 40  |  Issue : 1  |  Page : 45-51

Effect of anode/filter combination on average glandular dose in mammography


1 Department of Medical Imaging Technology, Faculty of Biomedical Sciences and Postgraduate Training, Medical University of Lodz, Lodz; Department of Medical Physics, Regional Cancer Center, Copernicus Memorial Hospital of Lodz, Lodz, Poland
2 Laser Diagnostic and Therapy Center, Lodz University of Technology Foundation, Lodz, Poland

Correspondence Address:
Michal Biegala
Department of Medical Imaging Technology, Faculty of Biomedical Sciences and Postgraduate Training, Medical University of Lodz,
Poland
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-6203.152251

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A comparative analysis of the mean glandular doses was conducted in 100 female patients who underwent screening mammography in 2011 and 2013. Siemens Mammomat Novation with the application of the W/Rh anode/filter combination was used in 2011, whereas in 2013 anode/filter combination was Mo/Mo or Mo/Rh. The functioning of mammography was checked and the effectiveness of the automatic exposure control (AEC) system was verified by measuring compensation of changes in the phantom thickness and measuring tube voltage. On the base of exposure parameters, an average glandular dose for each of 100 female patients was estimated. The images obtained by using AEC system had the acceptable threshold contrast visibility irrespective of the applied anode/filter combination. Mean glandular doses in the females, examined with the application of the W/Rh anode/filter combination, were on average 23.6% lower than that of the Mo/Mo or Mo/Rh anode/filter combinations. It is recommended to use a combination of the W/Rh anode /filter which exhibited lower mean glandular doses.


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