A methodology for anatomical 3D modelling of patient’s bones from MRI

B. Gilles, R. Perrin, J-P. Vallée, L. Moccozet, N. Magnenat-Thalmann, F. Terrier MIRALab, University of Geneva, Geneva, Switzerland, Radiology Department, Geneva University Hospital, Geneva, Switzerland Introduction Periacetabular osteotomy is an accepted surgical procedure to reorient the acetabulum in patients with hip symptoms of mechanical overload, impingement or femoral head instability [1]. For both the diagnosis and the surgical planning, an accurate estimate of the range of motion of the hip is required. A current project of the CO-ME (Computer-aided and Image Guided Medical Interventions) Swiss NCCR (National Centre of Competence in Research) is to create for each patient a virtual hip derived from its static MRI data for anatomical and functional modelling of the lower limb. As a first step of this project, the present study describes a methodology for anatomical modelling of the hip derived from MRI. A Generic model is build and then used as discrete deformable models to reconstruct any individual models automatically.