The effect of breast compression on mass conspicuity in digital mammography
- 15 September 2008
- journal article
- research article
- Published by Wiley in Medical Physics
- Vol. 35 (10), 4464-4473
- https://doi.org/10.1118/1.2977600
Abstract
This study analyzed how the inherent quality of diagnostic information in digital mammography could be affected by breast compression. A digital mammography system was modeled using a Monte Carlo algorithm based on the Penelope program, which has been successfully used to model several medical imaging systems. First, the Monte Carlo program was validated against previous measurements and simulations. Once validated, the Monte Carlo software modeled a digital mammography system by tracking photons through a voxelized software breast phantom, containing anatomical structures and breast masses, and following photons until they were absorbed by a selenium-based flat-panel detector. Simulations were performed for two compression conditions (standard compression and 12.5% reduced compression) and three photon flux conditions (constant flux, constant detector signal, and constant glandular dose). The results showed that reduced compression led to higher scatter fractions, as expected. For the constant photon flux condition, decreased compression also reduced glandular dose. For constant glandular dose, the SdNR for a 4 cm breast was 0.60 +/- 0.11 and 0.62 +/- 0.11 under standard and reduced compressions, respectively. For the 6 cm case with constant glandular dose, the SdNR was 0.50 +/- 0.11 and 0.49 +/- 0.10 under standard and reduced compressions, respectively. The results suggest that if a particular imaging system can handle an approximately 10% increase in total tube output and 10% decrease in detector signal, breast compression can be reduced by about 12% in terms of breast thickness with little impact on image quality or dose.Keywords
Funding Information
- Komen Foundation (PDF55806)
This publication has 55 references indexed in Scilit:
- Monte Carlo and Phantom Study of the Radiation Dose to the Body from Dedicated CT of the BreastRadiology, 2008
- Radiation Dose to Organs and Tissues from Mammography: Monte Carlo and Phantom StudyRadiology, 2008
- Suitability of new anode materials in mammography: Dose and subject contrast considerations using Monte Carlo simulationMedical Physics, 2006
- Anisotropic imaging performance in indirect x-ray imaging detectorsMedical Physics, 2006
- A study of mean glandular dose during diagnostic mammography in Malaysia and some of the factors affecting itThe British Journal of Radiology, 2003
- Imaging performance of amorphous selenium based flat-panel detectors for digital mammography: Characterization of a small area prototype detectorMedical Physics, 2003
- A method for measuring the presampled MTF of digital radiographic systems using an edge test deviceMedical Physics, 1998
- Breast thickness in routine mammograms: effect on image quality and radiation dose.American Journal of Roentgenology, 1994
- A comparison of mono- and poly-energetic x-ray beam performance for radiographic and fluoroscopic imagingMedical Physics, 1994
- An analytical model of the scattered radiation distribution in diagnostic radiologyMedical Physics, 1988