An optimised radial basis function algorithm for fast non-rigid registration of medical images

• Published in: Computers in biology and medicine Vol. 40; no. 1; pp. 1 - 7
• Main Authors: Lapeer, R.J., Shah, S.K., Rowland, R.S.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 01.01.2010; Elsevier Limited
• Subjects: Algorithms; Brain - anatomy & histology; Computer assisted surgery; Humans; Image Enhancement - methods; Image Interpretation, Computer-Assisted - methods; Internal Medicine; Magnetic Resonance Imaging; Medical image registration; Other; Radial basis functions; Real-time performance; Smooth interpolation; Tomography, X-Ray Computed; Real-time performance; Radial basis functions; Smooth interpolation; Computer assisted surgery; Medical image registration
• ISSN: 0010-4825; 1879-0534; 1879-0534
• DOI: 10.1016/j.compbiomed.2009.10.002

The registration of multi-modal medical image data is important in the fields of image guided surgery and computer aided medical diagnosis. Registration accuracy is of utmost importance in both fields, however in the former, the speed of registration is equally important. In this paper, we present a point-based ‘fast’ non-rigid registration algorithm which exhibits significant speedups as compared to the non-optimised equivalent algorithm. Additionally, we make use of the parallel nature of the graphics processing unit (GPU) of the video adapter card of a standard PC to gain further speedups. The algorithm achieved sub-second performance when tested on the registration of MR with CT image data of size 256 3 .