Annals of Biomedical Engineering

, Volume 34, Issue 10, pp 1587–1599

Evaluation of Three-dimensional Image Registration Methodologies for In Vivo Micro-computed Tomography

  • Steven K. Boyd
  • Stephan Moser
  • Michael Kuhn
  • Robert J. Klinck
  • Peter L. Krauze
  • Ralph Müller
  • Jürg A. Gasser
Article

DOI: 10.1007/s10439-006-9168-7

Cite this article as:
Boyd, S.K., Moser, S., Kuhn, M. et al. Ann Biomed Eng (2006) 34: 1587. doi:10.1007/s10439-006-9168-7

Abstract

The advent of in vivo micro-computed tomography (micro-CT) provides a novel approach to measure the temporal adaptation of bone micro-architecture within an individual. Spatial alignment in the scanner between serial scans is challenging, but three-dimensional image registration can be used to superimpose the resulting image data, thus ensuring consistent regions of interest (ROI) for analysis. There have been several approaches to image registration developed, yet little is known about their application to high resolution micro-CT data. The purpose of this study was to explore combinations of three image registration similarity measures and three image interpolators, in addition to multi-resolution registration configurations, for assessment of computational efficiency and accuracy on both in vitro and in vivo micro-CT data. Accuracy measures were assessed by comparison with a gold-standard reference transform based on attached fiducial markers. It was concluded that a mutual information registration similarity measure with a linear image interpolator, applied at steps of increasing image resolution, provided the best compromise between accurate and efficient results. In vivo registration of tibial bone microstructure measured in an ovariectomized rat model provided consistent ROI thus demonstrating the usefulness of three-dimensional image registration for in vivo experimental and clinical micro-CT research. It is a technique that is poised to become commonly utilized for analysis of micro-CT data to diagnose and monitor efficacy of therapy in bone diseases.

Keywords

Image registration Micro-computed tomography Osteoporosis Rat models Tibial bone micro-structure 

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Steven K. Boyd
    • 1
  • Stephan Moser
    • 1
    • 2
  • Michael Kuhn
    • 1
    • 2
  • Robert J. Klinck
    • 1
  • Peter L. Krauze
    • 1
  • Ralph Müller
    • 2
  • Jürg A. Gasser
    • 3
  1. 1.Department of Mechanical and Manufacturing Engineering, Schulich School of EngineeringUniversity of CalgaryCalgaryCanada
  2. 2.Institute for Biomedical EngineeringUniversity and ETH ZürichZürichSwitzerland
  3. 3.Novartis Institutes for Biomedical ResearchBaselSwitzerland