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Comparison of breast doses for digital tomosynthesis estimated from patient exposures and using PMMA breast phantoms

Comparison of breast doses for digital tomosynthesis estimated from patient exposures and using PMMA breast phantoms

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Authors

  • David R. Dance
  • Celia J. Strudley
  • Kenneth C. Young
  • Jennifer M. Oduko
  • Patsy Whelehan
  • E. H. Lindsay Mungutroy

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Info

Original languageEnglish
Title of host publicationBreast Imaging
Subtitle of host publication11th International Workshop, IWDM 2012, Philadelphia, PA, USA, July 8-11, 2012. Proceedings
EditorsAndrew D. A. Maidment, Predrag R. Bakic, Sara Gavenonis
Place of publicationBerlin
PublisherSpringer
Publication date2012
Pages316-321
Number of pages6
ISBN (Electronic)9783642312717
ISBN (Print)9783642312700
DOIs
StatePublished

Publication series

NameLecture notes in computer science
PublisherSpringer
Volume7361

Workshop

Workshop11th International Workshop on Breast Imaging
Abbreviated titleIWDM 2012
CountryUnited States
CityPhiladelphia
Period8/07/1211/07/12
Other
Internet addresshttp://www.iwdm2012.org/tiki-index.php

Abstract

A proposed European protocol for dosimetry in digital breast tomosynthesis (DBT) has been applied to estimate the average glandular breast dose (AGD) for two different DBT units. AGD was measured for the examination of series of women and for breast-simulating polymethyl methacrylate (PMMA) phantoms, thus assessing the suitability of the phantoms used for dosimetry in 2D mammography for DBT dosimetry. For the first system the mean values of the AGD for breast thicknesses of 21mm, 53mm and 90mm, were 1.21±0.06 (2 s.e.m), 2.12±0.07 and 4.90±0.11 mGy respectively. The corresponding values for the equivalent PMMA thicknesses of 20mm, 45mm and 70mm were 0.92, 2.08 and 4.65 mGy respectively. Similar agreement was found for the second system. It is concluded that the use of standard PMMA phantoms of appropriate thicknesses (as used for 2D dosimetry) to simulate the breast in DBT provides a reasonable estimate of the AGD. © 2012 Springer-Verlag Berlin Heidelberg.

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