title: Diagnostic radiograph based 3D bone reconstruction framework: application to osteotomy surgical planning.
abstract: Pre-operative planning in orthopedic surgery is essential to identify the optimal surgical considerations for each patient-specific case. The planning for osteotomy is presently conducted through two-dimensional (2D) radiographs, where the surgeon has to mentally visualize the bone deformity. This is due to direct three-dimensional (3D) imaging modalities such as Computed Tomography (CT) still being restricted to a minority of complex orthopedic procedures. This paper presents a novel 3D bone reconstruct technique, through bi-planar 2D radiographic images. The reconstruction will be pertinent to osteotomy surgical diagnostics and planning. The framework utilizes a generic 3D model of the bone of interest to obtain the anatomical topology information. A 2D non-rigid registration is performed between the projected contours of this generic 3D model and extracted edges of the X-ray image to identify the planar customization required. Subsequently a free-form deformation based manipulation is conducted to customize the overall 3D bone shape.
authors.affiliation: Department of Mechanical Engineering, The University of Auckland, New Zealand.
authors.forename: Pavan
authors.initials: P
authors.lastname: Gamage
authors.forename: Sheng Quan
authors.initials: SQ
authors.lastname: Xie
authors.forename: Patrice
authors.initials: P
authors.lastname: Delmas
authors.forename: Wei Liang
authors.initials: WL
authors.lastname: Xu
mesh_terms: D000465:Algorithms; D005269:Femur / Q000000981:diagnostic imaging* / Q000601:surgery*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D010027:Osteotomy / Q000379:methods*; D010363:Pattern Recognition, Automated / Q000379:methods*; D011300:Preoperative Care / Q000379:methods; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*