title: A comparison of the 3D kinematic measurements obtained by single-plane 2D-3D image registration and RSA.
abstract: 3D computed tomography (CT) to single-plane 2D fluoroscopy registration is an emerging technology for many clinical applications such as kinematic analysis of human joints and image-guided surgery. However, previous registration approaches have suffered from the inaccuracy of determining precise motion parameters for out-of-plane movements. In this paper we compare kinematic measurements obtained by a new 2D-3D registration algorithm with measurements provided by the gold standard Roentgen Stereo Analysis (RSA). In particular, we are interested in the out-of-plane translation and rotations which are difficult to measure precisely using a single plane approach. Our experimental results show that the standard deviation of the error for out-of-plane translation is 0.42 mm which compares favourably to RSA. It is also evident that our approach produces very similar flexion/extension, abduction/adduction and external knee rotation angles when compared to RSA.
authors.affiliation: School of Engineering and Information Technology, The University of New South Wales at the Australian Defence Force Academy, Canberra, Australia. muhit@ieee.org
authors.forename: Abdullah A
authors.initials: AA
authors.lastname: Muhit
authors.forename: Mark R
authors.initials: MR
authors.lastname: Pickering
authors.forename: Tom
authors.initials: T
authors.lastname: Ward
authors.forename: Jennie M
authors.initials: JM
authors.lastname: Scarvell
authors.forename: Paul N
authors.initials: PN
authors.lastname: Smith
mesh_terms: D000465:Algorithms; D005471:Fluoroscopy; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods*