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Motivated by the goals of improving segmentation of challenging liver cases containing low contrast with neighboring organs and presence of pathologies as well as highly varied shapes between subjects, a novel framework is presented for liver segmentation in portal phase of abdominal CT images. In a first training step, we describe a multilevel local region-based Sparse Shape Composition (SSC) model,...
Segmentation of the femoral head and proximal acetabulum from three dimensional (3D) CT data is essential for patient specific planning and simulation of hip surgery whereas it still remains challenging due to deformed shapes and extremely narrow inter-bone regions. In this paper, we present an accurate, automatic and fast approach for simultaneous segmentation of the femoral head and proximal acetabulum...
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