title: Fast free-form deformation using graphics processing units.
abstract: A large number of algorithms have been developed to perform non-rigid registration and it is a tool commonly used in medical image analysis. The free-form deformation algorithm is a well-established technique, but is extremely time consuming. In this paper we present a parallel-friendly formulation of the algorithm suitable for graphics processing unit execution. Using our approach we perform registration of T1-weighted MR images in less than 1 min and show the same level of accuracy as a classical serial implementation when performing segmentation propagation. This technology could be of significant utility in time-critical applications such as image-guided interventions, or in the processing of large data sets.
authors.affiliation: Centre for Medical Image Computing, Department of Medical Physics and Bioengineering, University College London, London, UK. m.modat@ucl.ac.uk
authors.forename: Marc
authors.initials: M
authors.lastname: Modat
authors.forename: Gerard R
authors.initials: GR
authors.lastname: Ridgway
authors.forename: Zeike A
authors.initials: ZA
authors.lastname: Taylor
authors.forename: Manja
authors.initials: M
authors.lastname: Lehmann
authors.forename: Josephine
authors.initials: J
authors.lastname: Barnes
authors.forename: David J
authors.initials: DJ
authors.lastname: Hawkes
authors.forename: Nick C
authors.initials: NC
authors.lastname: Fox
authors.forename: Sébastien
authors.initials: S
authors.lastname: Ourselin
mesh_terms: D000465:Algorithms; D003196:Computer Graphics; D003952:Diagnostic Imaging; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D012984:Software