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A new Method for Assessing the Anchorage of Custom-Made Hip Endoprostheses with CT

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Computer Assisted Radiology / Computergestützte Radiologie

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Summary

Metal artefacts in CT disturb a reliable visualisation and a quantitative assessment of the bone-implant interface. By using an extended CT-scale in a modified reconstruction technique the full implant geometry and its relationship to cortical bone can be displayed.

This technique was verified on cadaver femora with implanted hip endoprostheses and on 10 patients with custom-made hip endoprostheses. A “filling-factor” defined as the ratio of implant area to medullary space area was determined for each section. We conclude from our preliminary results that such area measurements could be useful to evaluate the contact area between bone and implant with the aim to quantify the fit of different types of prostheses.

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References

  1. Rüiegsegger, P.; Hangartner, H.U.; Keller, T.; Hinderling, T.: Standardization of computed tomography images by means of material selective beam hardening correction. J. Comput. Assist. Tomogr. 2: 184 - 188, 1978.

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  2. Klotz, E.; Kalender, W.; Sokiranski, R.; Felsenberg, D.: Algorithms for the reduction of CT artefacts caused by metallic implants. SPIE Vol 1234: 642 - 650, 1990

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  3. Sokiranski, R.: Metallartefaktreduzierung (MAR) in der Computertomographie am Beispiel der Hirftendoprothesen. Freie Universitit Berlin, Fachbereich Medizin, Dissertation, 1990.

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Author information

Authors and Affiliations

  1. Klinikum Steglitz, Free University of Berlin, Berlin, Germany

    R. Sokiranski & D. Felsenberg

  2. Siemens Medizintechnik, Erlangen, Germany

    E. Klotz

  3. Institut für Anatomie, Free University of Berlin, Berlin, Germany

    S. Klotz & S. Exner

Authors
  1. R. Sokiranski
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  2. E. Klotz
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  3. S. Klotz
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  4. D. Felsenberg
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  5. S. Exner
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Editor information

Editors and Affiliations

  1. Institut für Techn. Informatik, Technische Universität Berlin, Berlin, Federal Republic of Germany

    Heinz U. Lemke Ph. D.

  2. Toshiba, America MRI, Inc., San Francisco, USA

    Michael L. Rhodes Ph. D.

  3. Dept. of Diagnostic Radiology, Yale University, New Haven, Conn., USA

    C. C. Jaffe M. D.

  4. Freie Universität Berlin Universitätsklinikum Rudolf Virchow, Berlin, Federal Republic of Germany

    Roland Felix M. D.

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© 1991 Springer-Verlag Berlin Heidelberg

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Sokiranski, R., Klotz, E., Klotz, S., Felsenberg, D., Exner, S. (1991). A new Method for Assessing the Anchorage of Custom-Made Hip Endoprostheses with CT. In: Lemke, H.U., Rhodes, M.L., Jaffe, C.C., Felix, R. (eds) Computer Assisted Radiology / Computergestützte Radiologie. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-00807-2_32

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  • DOI: https://doi.org/10.1007/978-3-662-00807-2_32

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-00809-6

  • Online ISBN: 978-3-662-00807-2

  • eBook Packages: Springer Book Archive

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