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Proceedings Paper

Motion artifacts in dual-energy contrast-enhanced mammography
Author(s): Nicholas Allec; Shiva Abbaszadeh; John M. Lewin; Karim S. Karim
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Paper Abstract

Several strategies have been investigated to acquire both low- and high-energy images simultaneously for contrastenhanced mammography (CEM). However, for the dual-energy technique where the existing conventional mammography infrastructure can be leveraged, low- and high-energy images are acquired using two separate exposures and the finite time between image acquisition leads to motion artifacts in the combined image. Motion artifacts lead to greater noise in the combined image and affect image quality, however the relationship between them is not clear. In this study we examine motion artifacts in dual-energy CEM and their impact on anatomical noise in the combined image and tumor detectability. To study the impact of motion artifacts, a cascaded systems model is extended to include such motion artifacts. An ideal observer model is used to quantify the performance and CEM images from a previous clinical study are used for comparison of the extended model.

Paper Details

Date Published: 3 March 2012
PDF: 9 pages
Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83134P (3 March 2012); doi: 10.1117/12.912295
Show Author Affiliations
Nicholas Allec, Univ. of Waterloo (Canada)
Waterloo Institute for Nanotechnology, Univ. of Waterloo (Canada)
Shiva Abbaszadeh, Univ. of Waterloo (Canada)
John M. Lewin, Diversified Radiology of Colorado Research Institute (United States)
Karim S. Karim, Univ. of Waterloo (Canada)

Published in SPIE Proceedings Vol. 8313:
Medical Imaging 2012: Physics of Medical Imaging
Norbert J. Pelc; Robert M. Nishikawa; Bruce R. Whiting, Editor(s)

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