Assessment Of Three-Dimensional Scoliotic Deformity By Rasterstereography

E. Hierholzer; B. Drerup

doi:10.1117/12.950448

14 April 1989 Assessment Of Three-Dimensional Scoliotic Deformity By Rasterstereography

E. Hierholzer, B. Drerup

Proceedings Volume 1030, Biostereometrics '88; (1989) https://doi.org/10.1117/12.950448
Event: Biostereometrics '88: Spatial and Spatiotemporal Analysis of Biological Form and Function, 1988, Basel, Switzerland

Abstract

Analysis of three-dimensional back shape enables the calculation of the so-called symmetry line, which is closely related to the line of the spinous processes on the back surface. A comparative photogrammetric measurement proved a mean deviation in the order of the palpation error. Furthermore, the angle of the surface normal on the symmetry line proved to be equal to the angle of vertebral rotation within the limits of radiographic accuracy. These findings enable a three-dimensional reconstruction of the spinal midline. Scoliotic deformity may thus be determined solely from surface data. In frontal projection the mean error of the reconstructed midline is about 4 mm as compared to standard radiographs.

Citation Download Citation

E. Hierholzer and B. Drerup "Assessment Of Three-Dimensional Scoliotic Deformity By Rasterstereography", Proc. SPIE 1030, Biostereometrics '88, (14 April 1989); https://doi.org/10.1117/12.950448

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