Accurate registration of dynamic contrast-enhanced breast MR images with robust estimation and linear programming

Authors:
Yuanjie Zheng;Andrew D. A. Maidment;James C. Gee
Affiliations:
PICSL, Department of Radiology, University of Pennsylvania, Philadelphia, PA;Radiology Department, Hospital of the University of Pennsylvania, Philadelphia, PA;PICSL, Department of Radiology, University of Pennsylvania, Philadelphia, PA
Venue:
ISBI'10 Proceedings of the 2010 IEEE international conference on Biomedical imaging: from nano to Macro
Year:
2010

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Abstract

Accurate registration of the dynamic contrast-enhanced (DCE) MR breast images is a well-known difficult problem. It is because the breast motion is non-rigid and the intensity variations of tumor between pre-contrast and post-contrast images can cause the unexpected tumor shrinking/expanding effect in the registration process. To obtain accurate registration, we propose two techniques: a novel image similarity measure based on the robust estimation and a new global optimization technique by reformulating the registration problem as solving a linear programming. The novel similarity measure can help to handle the shrinking/expanding problem while the global optimization technique offers more accurate estimation of the breast motion.