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—This paper presents a semi-automatic segmentation method to extract the liver volume from CT scans, based on discrete deformable surfaces with both a priori shape and intensity information. A shape model of the liver, represented as a triangular mesh, is built and is manually located in the region of interest, to be iteratively deformed in function of the(More)
Palpation is a diagnostic technique used for evaluating physical properties of abdominal tissues and organs. The emulation of this procedure using virtual simulators is challenging due to trades between realism and interactivity. In this paper a virtual palpation system of the liver is proposed using a polyhedral mesh with a first order viscoelastic model(More)
Virtual Reality systems for medical procedures such as the palpation of different organs, requires fast, robust, accurate and reliable computational methods for providing realism during interaction with the 3D biological models. This paper presents the segmentation, reconstruction and palpation simulation of a healthy liver volume as a tool for training.(More)