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Proceedings Paper

Three-dimensional reconstruction of the human spine from biplanar radiographs: using multiscale wavelets analysis and spline interpolators for semi-automation
Author(s): Sylvain Deschenes; Benoit Godbout; Dominic Branchaud; David Mitton; Vincent Pomero; Andre Bleau; Wafa Skalli; Jacques A. de Guise
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Paper Abstract

We propose a new fast stereoradiographic 3D reconstruction method for the spine. User input is limited to few points passing through the spine on two radiographs and two line segments representing the end plates of the limiting vertebrae. A 3D spline that hints the positions of the vertebrae in space is then generated. We then use wavelet multi-scale analysis (WMSA) to automatically localize specific features in both lateral and frontal radiographs. The WMSA gives an elegant spectral investigation that leads to gradient generation and edge extraction. Analysis of the information contained at several scales leads to the detection of 1) two curves enclosing the vertebral bodies' walls and 2) inter-vertebral spaces along the spine. From this data, we extract four points per vertebra per view, corresponding to the corners of the vertebral bodies. These points delimit a hexahedron in space where we can match the vertebral body. This hexahedron is then passed through a 3D statistical database built using local and global information generated from a bank of normal and scoliotic spines. Finally, models of the vertebrae are positioned with respect to these landmarks, completing the 3D reconstruction.

Paper Details

Date Published: 15 May 2003
PDF: 8 pages
Proc. SPIE 5032, Medical Imaging 2003: Image Processing, (15 May 2003); doi: 10.1117/12.480301
Show Author Affiliations
Sylvain Deschenes, Ecole de Technologie Superieure, CRCHUM (Canada)
Benoit Godbout, Ecole de Technologie Superieure, CRCHUM (Canada)
Dominic Branchaud, Ecole de Technologie Superieure, CRCHUM (Canada)
David Mitton, Ecole Nationale Superieure d'Arts et Metiers, CNRS (France)
Vincent Pomero, Ecole Nationale Superieure d'Arts et Metiers, CNRS (France)
Andre Bleau, Ecole de Technologie Superieure, CRCHUM (Canada)
Wafa Skalli, Ecole Nationale Superieure d'Arts et Metiers, CNRS (France)
Jacques A. de Guise, Ecole de Technologie Superieure, CRCHUM (Canada)


Published in SPIE Proceedings Vol. 5032:
Medical Imaging 2003: Image Processing
Milan Sonka; J. Michael Fitzpatrick, Editor(s)

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