title: Fast 3D spine reconstruction of postoperative patients using a multilevel statistical model.
abstract: Severe cases of spinal deformities such as scoliosis are usually treated by a surgery where instrumentation (hooks, screws and rods) is installed to the spine to correct deformities. Even if the purpose is to obtain a normal spine curve, the result is often straighter than normal. In this paper, we propose a fast statistical reconstruction algorithm based on a general model which can deal with such instrumented spines. To this end, we present the concept of multilevel statistical model where the data are decomposed into a within-group and a between-group component. The reconstruction procedure is formulated as a second-order cone program which can be solved very fast (few tenths of a second). Reconstruction errors were evaluated on real patient data and results showed that multilevel modeling allows better 3D reconstruction than classical models.
authors.affiliation: Computer Science Dept., Faculty of Engineering, University of Mons, Belgium. Fabian.Lecron@umons.ac.be
authors.forename: Fabian
authors.initials: F
authors.lastname: Lecron
authors.forename: Jonathan
authors.initials: J
authors.lastname: Boisvert
authors.forename: Saïd
authors.initials: S
authors.lastname: Mahmoudi
authors.forename: Hubert
authors.initials: H
authors.lastname: Labelle
authors.forename: Mohammed
authors.initials: M
authors.lastname: Benjelloun
mesh_terms: D003198:Computer Simulation; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007796:Laminectomy; D008954:Models, Biological; D015233:Models, Statistical; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D019651:Plastic Surgery Procedures; D015203:Reproducibility of Results; D012600:Scoliosis / Q000000981:diagnostic imaging* / Q000601:surgery*; D012680:Sensitivity and Specificity; D013131:Spine / Q000000981:diagnostic imaging* / Q000601:surgery*; D016896:Treatment Outcome