Three-dimensional reconstruction of the human spine from biplanar radiographs: using multiscale wavelets analysis and spline interpolators for semi-automation

Sylvain Deschenes; Benoit Godbout; Dominic Branchaud; David Mitton; Vincent Pomero; Andre Bleau; Wafa Skalli; Jacques A. de Guise

doi:10.1117/12.480301

15 May 2003 Three-dimensional reconstruction of the human spine from bi-planar radiographs: using multiscale wavelet analysis and spline interpolators for semi-automation

Sylvain Deschenes, Benoit Godbout, Dominic Branchaud, David Mitton, Vincent Pomero, Andre Bleau, Wafa Skalli, Jacques A. de Guise

Author Affiliations +

Proceedings Volume 5032, Medical Imaging 2003: Image Processing; (2003) https://doi.org/10.1117/12.480301
Event: Medical Imaging 2003, 2003, San Diego, California, United States

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.

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Sylvain Deschenes, Benoit Godbout, Dominic Branchaud, David Mitton, Vincent Pomero, Andre Bleau, Wafa Skalli, and Jacques A. de Guise "Three-dimensional reconstruction of the human spine from bi-planar radiographs: using multiscale wavelet analysis and spline interpolators for semi-automation", Proc. SPIE 5032, Medical Imaging 2003: Image Processing, (15 May 2003); https://doi.org/10.1117/12.480301

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