A Monte Carlo model for mean glandular dose evaluation in spot compression mammography

Medical Physics
Antonio SarnoIoannis Sechopoulos

Abstract

To characterize the dependence of normalized glandular dose (DgN) on various breast model and image acquisition parameters during spot compression mammography and other partial breast irradiation conditions, and evaluate alternative previously proposed dose-related metrics for this breast imaging modality. Using Monte Carlo simulations with both simple homogeneous breast models and patient-specific breasts, three different dose-related metrics for spot compression mammography were compared: the standard DgN, the normalized glandular dose to only the directly irradiated portion of the breast (DgNv), and the DgN obtained by the product of the DgN for full field irradiation and the ratio of the mid-height area of the irradiated breast to the entire breast area (DgNM ). How these metrics vary with field-of-view size, spot area thickness, x-ray energy, spot area and position, breast shape and size, and system geometry was characterized for the simple breast model and a comparison of the simple model results to those with patient-specific breasts was also performed. The DgN in spot compression mammography can vary considerably with breast area. However, the difference in breast thickness between the spot compressed area and the uncom...Continue Reading

References

Feb 1, 1979·Radiology·G R HammersteinJ S Laughlin
Feb 24, 2005·Physics in Medicine and Biology·Samta C Thacker, Stephen J Glick
Feb 7, 2007·Medical Physics·Ioannis SechopoulosAndrew Karellas
Jun 7, 2007·Medical & Biological Engineering & Computing·Christos ZyganitidisNicolas Pallikarakis
Oct 1, 2010·Medical Physics·Ioannis SechopoulosCarl J D'Orsi
Aug 17, 2012·Medical Physics·Ioannis SechopoulosSteve Si Jia Feng
Aug 13, 2015·Physics in Medicine and Biology·C FedonR Longo
Sep 9, 2015·Physics in Medicine and Biology·Anita NosratiehJohn M Boone
Dec 20, 2015·Physics in Medicine and Biology·G MettivierP Russo

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Citations

Jun 8, 2018·Physics in Medicine and Biology·L PaixãoJ Garayoa
Apr 9, 2019·Physics in Medicine and Biology·Josilene C SantosPaulo R Costa
May 2, 2018·Journal of Synchrotron Radiation·Francesca Di LilloPaolo Russo
Feb 2, 2019·Australasian Physical & Engineering Sciences in Medicine·Donald McLeanLisa Robertson

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