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Proceedings Paper

First results of a multiple fan-beam approach to analyze bone structure in vivo
Author(s): Peter Ruegsegger; Adrian Kohlbrenner; Dieter Ulrich; Andres Laib
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Paper Abstract

Multiple fan-beam CT combines the advantages of fan-beam and cone-beam CT, i.e. the precise reconstructions of the former and the fast (2D) data acquisition of the latter. Two systems had been realized: a 3D-Micro-CT for the examination of bone samples and small laboratory animals with a spatial resolution of 20 micrometer, and a 3D-pQCT system for the examination of patients with a spatial resolution of 120 micrometer. Both system are able to perform complete 3D examinations within two minutes. In this work we report on pilot studies performed with the 3D-pQCT on the distal radius of patients. First results of longitudinal examinations reveal surprising temporal changes of cortical as well as cancellous bone. Hence it is now possible to base the theoretical models on real data and to consider the consequences of structural changes on the mechanical competence of bone in individual patients.

Paper Details

Date Published: 22 September 1999
PDF: 8 pages
Proc. SPIE 3772, Developments in X-Ray Tomography II, (22 September 1999); doi: 10.1117/12.363739
Show Author Affiliations
Peter Ruegsegger, Univ. of Zurich and Swiss Federal Institute of Technology (Switzerland)
Adrian Kohlbrenner, Univ. of Zurich and Swiss Federal Institute of Technology (Switzerland)
Dieter Ulrich, Univ. of Zurich and Swiss Federal Institute of Technology (Switzerland)
Andres Laib, Univ. of Zurich and Swiss Federal Institute of Technology (Switzerland)


Published in SPIE Proceedings Vol. 3772:
Developments in X-Ray Tomography II
Ulrich Bonse, Editor(s)

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