title: Processing computer tomography bone data for prosthetic finite element modeling: a technical note.
abstract: A software scheme is presented to extract the shapes of tibiae and fibulae from amputee computer tomography (CT) data for use in prosthetic finite element modeling. A snake algorithm is implemented to overcome challenges of bone-soft tissue edge detection common in this application. Means to enhance initial guess contours, ensure contour continuity, overcome point-clustering problems, and handle high-curvature regions are also described. Effectiveness of the algorithm is demonstrated on image data from a unilateral transtibial amputee subject.
authors.affiliation: Department of Bioengineering, University of Washington, Seattle, WA 98195, USA.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Saxena
authors.forename: Santosh G
authors.initials: SG
authors.lastname: Zachariah
authors.forename: Joan E
authors.initials: JE
authors.lastname: Sanders
mesh_terms: D000465:Algorithms; D000671:Amputation, Surgical; D001186:Artificial Limbs; D005360:Fibula / Q000000981:diagnostic imaging*; D020342:Finite Element Analysis; D013977:Tibia / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed