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Phantoms for Quality Control Procedures of Digital Breast Tomosynthesis

  • Ramona W. Bouwman
  • Oliver Diaz
  • Kenneth C. Young
  • Ruben E. van Engen
  • Wouter J. H. Veldkamp
  • David R. Dance
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7361)

Abstract

For quality control (QC) protocols in full field digital mammography polymethyl methacrylate (PMMA) phantoms are generally used. The possibility of using alternative materials has been investigated for digital breast tomosynthesis (DBT) because of the increased importance of scatter and more complex imaging geometries. We have investigated the use of PMMA in combination with polyethylene (PE) to simulate a range of typical breasts using a computation model of the imaging system. The scatter-to-primary ratios (SPRs) of both breast and phantom were also investigated and a difference up to 18% is found. Neglecting this difference in SPR in designing phantoms for DBT may lead to dosimetry errors. Taking into account estimated SPR values and relevant X-ray spectra, a combination of PMMA-PE slabs has been proposed to simulate typical breasts of thicknesses 30, 60 and 90 mm. The dosimetric error associated with using these phantoms for relevant X-ray spectra is less than 10%.

Keywords

Quality control digital breast tomosynthesis phantoms scatter-toprimary ratio 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Ramona W. Bouwman
    • 1
  • Oliver Diaz
    • 2
  • Kenneth C. Young
    • 3
    • 4
  • Ruben E. van Engen
    • 1
  • Wouter J. H. Veldkamp
    • 1
    • 5
  • David R. Dance
    • 3
    • 4
  1. 1.National Expert and Training Centre for Breast Cancer ScreeningRadboud University, Nijmegen Medical Centre (LRCB)NijmegenThe Netherlands
  2. 2.Centre for Vision, Speech and Signal Processing, Faculty of Engineering and Physical ScienesUniversity of SurreyGuildfordUK
  3. 3.Royal Surrey County HospitalNational Coordinating Centre for the Physics of Mammography (NCCPM)GuildfordUK
  4. 4.Department of PhysicsUniversity of SurreyGuildfordUK
  5. 5.Department of RadiologyLeiden University Medical CentreLeidenThe Netherlands

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