title: A new multi-modal similarity measure for fast gradient-based 2D-3D image registration.
abstract: 2D-3D image registration has been adopted in many clinical applications such as image-guided surgery and the kinematic analysis of bones in knee and ankle joints. In this paper we propose a new single-plane 2D-3D registration algorithm which requires far less iteration than previous techniques. The new algorithm includes a new multi-modal similarity measure and a novel technique for the analytic calculation of the required gradients. Our experimental results show that, when compared to existing gradient and non-gradient based techniques, the proposed algorithm has a wider range of initial poses for which registration can be achieved and requires significantly fewer iterations to converge to the true 3D position of the anatomical structure.
authors: School of Information Technology and Electrical Engineering, The University of New South Wales, Australian Defence Force Academy, Canberra, Australia. m.pickering@adfa.edu.au
authors: Mark R
authors: MR
authors: Pickering
authors: Abdullah A
authors: AA
authors: Muhit
authors: Jennie M
authors: JM
authors: Scarvell
authors: Paul N
authors: PN
authors: Smith
mesh_terms: D000465:Algorithms; D001175:Arthrography / Q000379:methods*; D005471:Fluoroscopy / Q000379:methods*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007719:Knee Joint / Q000000981:diagnostic imaging*; D011856:Radiographic Image Enhancement / Q000379:methods; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed / Q000379:methods*