Getting the most out of additional guidance information in deformable image registration by leveraging multi-objective optimization

Tanja Alderliesten; Peter A. N. Bosman; Arjan Bel

doi:10.1117/12.2081438

20 March 2015 Getting the most out of additional guidance information in deformable image registration by leveraging multi-objective optimization

Tanja Alderliesten, Peter A. N. Bosman, Arjan Bel

Author Affiliations +

Proceedings Volume 9413, Medical Imaging 2015: Image Processing; 94131R (2015) https://doi.org/10.1117/12.2081438
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

Incorporating additional guidance information, e.g., landmark/contour correspondence, in deformable image registration is often desirable and is typically done by adding constraints or cost terms to the optimization function. Commonly, deciding between a “hard” constraint and a “soft” additional cost term as well as the weighting of cost terms in the optimization function is done on a trial-and-error basis. The aim of this study is to investigate the advantages of exploiting guidance information by taking a multi-objective optimization perspective. Hereto, next to objectives related to match quality and amount of deformation, we define a third objective related to guidance information. Multi-objective optimization eliminates the need to a-priori tune a weighting of objectives in a single optimization function or the strict requirement of fulfilling hard guidance constraints. Instead, Pareto-efficient trade-offs between all objectives are found, effectively making the introduction of guidance information straightforward, independent of its type or scale. Further, since complete Pareto fronts also contain less interesting parts (i.e., solutions with near-zero deformation effort), we study how adaptive steering mechanisms can be incorporated to automatically focus more on solutions of interest. We performed experiments on artificial and real clinical data with large differences, including disappearing structures. Results show the substantial benefit of using additional guidance information. Moreover, compared to the 2-objective case, additional computational cost is negligible. Finally, with the same computational budget, use of the adaptive steering mechanism provides superior solutions in the area of interest.

Citation Download Citation

Tanja Alderliesten, Peter A. N. Bosman, and Arjan Bel "Getting the most out of additional guidance information in deformable image registration by leveraging multi-objective optimization", Proc. SPIE 9413, Medical Imaging 2015: Image Processing, 94131R (20 March 2015); https://doi.org/10.1117/12.2081438

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