Comparison of matching procedures applied on conventional X-ray images of total hip arthroplasty

F. Baruffaldi, R. Bedini, A. Cappello, A. Toni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work we compare the results of two matching methods for the alignment of x-ray images of Total Hip Arthroplasty (THA). The application of Singular Value Decomposition (SVD) on these type of images may encounter some problems related to the identification of the marker points. We developed an alternative iterative procedure, based on the linearization of the set of equations which define the affine transformations. The two methods, SVD vs. iterative, have been applied to match five couples of x-ray images of patients implanted with different commercial THA devices. The repeated tests show average fits usually better for the iterative method, with values of misalignments less than 2 pixels. The greatest improvement coming from the iterative methods is due to its robustness: it has a two order of magnitude higher repeatability, and it is much less sensitive to the operator input error.

Original languageEnglish
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
PublisherIEEE
Pages1198-1199
Number of pages2
Volume3
Publication statusPublished - 1996
EventProceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5) - Amsterdam, Neth
Duration: Oct 31 1996Nov 3 1996

Other

OtherProceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5)
CityAmsterdam, Neth
Period10/31/9611/3/96

ASJC Scopus subject areas

  • Bioengineering

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  • Cite this

    Baruffaldi, F., Bedini, R., Cappello, A., & Toni, A. (1996). Comparison of matching procedures applied on conventional X-ray images of total hip arthroplasty. In Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 3, pp. 1198-1199). IEEE.