Automatic 3d reconstruction of transfemoral residual limb from MRI images

Authors:
Giorgio Colombo;Giancarlo Facoetti;Caterina Rizzi;Andrea Vitali;Alessandro Zanello
Affiliations:
Department of Mechanical Engineering, Polytechnic of Milan, Milan, Italy;COGES Centre, University of Bergamo (BG), Dalmine, Italy;COGES Centre, University of Bergamo (BG), Dalmine, Italy,Department of Engineering, University of Bergamo (BG), Dalmine, Italy;Department of Engineering, University of Bergamo (BG), Dalmine, Italy;Humanitas Gavazzeni Clinic, Bergamo, Italy
Venue:
DHM'13 Proceedings of the 4th international conference on Digital Human Modeling and Applications in Health, Safety, Ergonomics, and Risk Management: human body modeling and ergonomics - Volume Part II
Year:
2013

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Abstract

This work is part a new design platform for lower limb prosthesis centered on the patient's digital model and based on the integrated use of virtual prototyping tools. In particular, 3D detailed model of residual limb, that includes not only the external skin but also bones and soft tissues, is needed for socket design and finite element analysis to study the socket-residual limb interaction. In this paper, we present a procedure for 3D automatic reconstruction of the residual starting from MRI images. The output is a 3D geometric model, in a neutral format (IGES), which permits CAD information exchange among the modules composing the design platform. The reconstruction procedure consists of three different phases: image pre-processing, voxel segmentation, 3D models generation. Results have been considered promising and future activities to enhance the algorithm performance have been planned.