Journal
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
Volume 81, Issue 1, Pages 8-17Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.cmpb.2005.10.004
Keywords
scoliosis; axial rotation; radiograph; pedicle shadow; iteration
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This study presents a new method for measuring axial rotation of vertebra, Anatomical landmarks of the vertebral body were first recognized in X-ray film. By employing appropriate geometrical relationships, vertebral body shape parameters and a computer iteration method, the rotation angle of vertebra on the transverse plane can rapidly be obtained. A cadaver lumbar spine axial rotation-fixation device was designed to confirm the accuracy of the proposed methodology. Rotation angles on CT images were adopted as the golden standard and compared with analytical results based on X-ray films. Analytical results demonstrated that the proposed method obtained more accurate and reliable results than previous methods. (c) 2005 Elsevier Ireland Ltd, All rights reserved.
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