Digital breast tomosynthesis: impact of a new beam quality on dose to patients

M. Chevalier; C. Viloria; P. Squair; M. S. Nogueira; O. Diaz

doi:10.1117/12.2317689

6 July 2018 Digital breast tomosynthesis: impact of a new beam quality on dose to patients

M. Chevalier, C. Viloria, P. Squair, M. S. Nogueira, O. Diaz

Proceedings Volume 10718, 14th International Workshop on Breast Imaging (IWBI 2018); 107181M (2018) https://doi.org/10.1117/12.2317689
Event: The Fourteenth International Workshop on Breast Imaging, 2018, Atlanta, Georgia, United States

Abstract

In this study we analyze the impact of new x-ray beam spectra on the mean glandular doses (MGD) delivered by a digital breast tomosynthesis system. The new polyenergetic spectra are generated with a rhodium (Rh) target and a 30 μm silver (Ag) filter. To evaluate the influence of the new spectra on patient doses, we compare the MGD values with those delivered with a regular Rh/Rh target/filter combination. Individual glandularity (%) of the patients in the study was estimated using the commercial software Volpara. Median of MGD values for CC and MLO views are around 38% and 46% lower with the Rh/Ag combination than with the Rh/Rh combination. Results suggest that the new spectra, with reduced dose properties, could be very useful in breast cancer screening programs.

Citation Download Citation

M. Chevalier, C. Viloria, P. Squair, M. S. Nogueira, and O. Diaz "Digital breast tomosynthesis: impact of a new beam quality on dose to patients", Proc. SPIE 10718, 14th International Workshop on Breast Imaging (IWBI 2018), 107181M (6 July 2018); https://doi.org/10.1117/12.2317689

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