Real-scale 3D models of the scoliotic spine from biplanar radiography without calibration objects

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Daniel Moura (Author) FEUP; Jorge Manuel Gomes Barbosa (Author) FEUP

Journal

Title: Computerized Medical Imaging and Graphics

Vol. 38 No. 7

Pages: 580-585

ISSN: 0895-6111

Publisher: Elsevier

Indexing

ISI Web of Knowledge

ISI Web of Science

Scopus

Scientific classification

FOS: Engineering and technology > Medical engineering

CORDIS: Technological sciences > Engineering > Biomedical enginnering

Other information

DOI: 10.1016/j.compmedimag.2014.05.007

Abstract (EN): This paper presents a new method for modelling the spines of subjects and making accurate 3D mea-surements using standard radiologic systems without requiring calibration objects. The method makesuse of the focal distance and statistical models for estimating the geometrical parameters of the system.A dataset of 32 subjects was used to assess this method. The results show small errors for the mainclinical indices, such as an RMS error of 0.49 degrees for the Cobb angle, 0.50 degrees for kyphosis, 0.38 degrees for lordosis, and 2.62 mm for the spinal length. This method is the first to achieve this level of accuracy without requiringthe use of calibration objects when acquiring radiographs.We conclude that the proposed method allows for the evaluation of scoliosis with a much simplersetup than currently available methods.

Language: Portuguese

Type (Professor's evaluation): Scientific