A comparison of mammographic systems for different breast thicknesses using model observer detectability

Nelis Van Peteghem; Elena Salvagnini; Hilde Bosmans; Lesley Cockmartin; Nicholas W. Marshall

doi:10.1117/12.2081865

18 March 2015 A comparison of mammographic systems for different breast thicknesses using model observer detectability

Nelis Van Peteghem, Elena Salvagnini, Hilde Bosmans, Lesley Cockmartin, Nicholas W. Marshall

Proceedings Volume 9412, Medical Imaging 2015: Physics of Medical Imaging; 941235 (2015) https://doi.org/10.1117/12.2081865
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

This work investigated image quality as a function of PMMA thickness on a variety of mammography systems. Image quality was quantified by calculating detectability (d’) using a non-prewhitening with eye filter model observer (NPWE) from routinely acquired quality control (QC) data of twelve digital radiography (DR) systems. The sample of systems included two mammography devices equipped with the Siemens PRIME upgrade and one system with the Claymount SmartBucky detector. The d’ data were calculated for a 0.1 and 0.25 mm diameter gold discs using images of homogeneous PMMA (thickness from 2 to 7 cm), all from the routinely performed AEC test. The GE Essential systems had the highest d’ values for low thicknesses and the lowest d’ values for high thicknesses. The Hologic Selenia Dimension systems had the most constant detectability curve, ensuring high d’ values at high thicknesses. This was achieved by increasing the mean glandular dose (MGD) at higher thicknesses compared to the other systems. The Siemens PRIME and the Claymount system detectability results were comparable to the standard FFDM systems. Mean glandular dose at 5, 6 and 7 cm PMMA and gold threshold thickness at 5 cm PMMA were also evaluated. The Claymount system had a high (but acceptable) threshold gold thickness (T) compared to the other systems. This was probably caused by the low dose at which this DR detector operates. Results of NPWE d’ and CDMAM analysis showed the same trends.

Citation Download Citation

Nelis Van Peteghem, Elena Salvagnini, Hilde Bosmans, Lesley Cockmartin, and Nicholas W. Marshall "A comparison of mammographic systems for different breast thicknesses using model observer detectability", Proc. SPIE 9412, Medical Imaging 2015: Physics of Medical Imaging, 941235 (18 March 2015); https://doi.org/10.1117/12.2081865

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available