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Proceedings Paper

Comparison of a digital flat-panel x-ray image intensifier and conventional film-screen system for radiostereometric analysis (RSA)
Author(s): Xunhua Yuan; Maria Drangova; Steve Pollmann; Ricky Miron; Robert Bourne; David W. Holdsworth
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Paper Abstract

In this paper, the accuracy and precision of RSA analysis using a GE InnovaTM 4100 digital flat panel and a Siemens Multistar x-ray image intensifier (XRII) were evaluated and compared with that of a conventional film-screen system, in order to explore the possibility of real-time kinematic and dynamic RSA study. A phantom, having two rigid body segments with no movement, was constructed and imaged by the digital flat panel, XRII and conventional screen-film systems, respectively. The acquired images were measured and motions were derived. The mean and standard deviation of the repeated results were analyzed to determine the accuracy and precision, respectively. Comparing all three axes, the lowest rotational accuracy and precision were 0.008 ± 0.011°, 0.013 ± 0.015° and 0.006 ± 0.05° while the lowest translational accuracy and precision were 25 ± 28 mm, 17 ± 37 mm and 4 ± 6 mm for the film-screen, XRII and digital flat panel, respectively. The evaluation of the accuracy and precision of the RSA in this study confirms its place as a highly accurate method. The study shows that both digital flat panel and XRII systems have potential application to the kinematics and dynamics joint study.

Paper Details

Date Published: 6 May 2004
PDF: 8 pages
Proc. SPIE 5368, Medical Imaging 2004: Physics of Medical Imaging, (6 May 2004); doi: 10.1117/12.532404
Show Author Affiliations
Xunhua Yuan, Robarts Research Institute (Canada)
London Health Science Ctr. (Canada)
Maria Drangova, Robarts Research Institute (Canada)
Univ. of Western Ontario (Canada)
Steve Pollmann, Robarts Research Institute (Canada)
Ricky Miron, Robarts Research Institute (Canada)
Robert Bourne, London Health Science Ctr. (Canada) and Univ. of Western Ontario (Canada)
David W. Holdsworth, Robarts Research Institute (Canada) and Univ. of Western Ontario (Canada)


Published in SPIE Proceedings Vol. 5368:
Medical Imaging 2004: Physics of Medical Imaging
Martin J. Yaffe; Michael J. Flynn, Editor(s)

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