4D ventricular segmentation and wall motion estimation using efficient discrete optimization

Authors:
Ahmed Besbes;Nikos Komodakis;Ben Glocker;Georgios Tziritas;Nikos Paragios
Affiliations:
Laboratoire MAS, Ecole Centrale de Paris;Laboratoire MAS, Ecole Centrale de Paris;Computer Aided Medical Procedures, Technische Universität München;University of Crete, Computer Science Department;Laboratoire MAS, Ecole Centrale de Paris
Venue:
ISVC'07 Proceedings of the 3rd international conference on Advances in visual computing - Volume Part I
Year:
2007

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Abstract

In this paper we propose a novel approach to ventricular motion estimation and segmentation. Our method is based on a MRF formulation where an optimal intensity-based separation between the endocardium and the rest of the cardiac volume is to be determined. Such a term is defined in the spatiotemporal domain, where the ventricular wall motion is introduced to account for correspondences between the consecutive segmentation maps. The estimation of the deformations is done through a continuous deformation field (FFD) where the displacements of the control points are determined using discrete labeling approach. Principles from linear programming and in particular the Primal/Dual Schema is used to recover the optimal solution in both spaces. Promising experimental results obtained on 13 MR spatiotemporal data sets demonstrate the potentials of our method.