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European Radiology

, Volume 10, Issue 2, pp 297–303 | Cite as

Precision of tibial cartilage morphometry with a coronal water-excitation MR sequence

  • A. Hyhlik-Dürr
  • S. Faber
  • R. Burgkart
  • T. Stammberger
  • K. -P. Maag
  • K. -H. Englmeier
  • M. Reiser
  • F. Eckstein
Musculoskeletal radiology

Abstract.

The aim of this study was to analyze the precision of tibial cartilage morphometry, by using a fast, coronal water-excitation sequence with high spatial resolution, to compare the reproducibility of 3D thickness vs volume estimates, and to test the technique in patients with severe osteoarthritis. The tibiae of 8 healthy volunteers and 3 patients selected for total knee arthroplasty were imaged repeatedly with a water-excitation sequence (image time 6 h 19 min, resolution 1.2 × 0.31 × 0.31 mm3), with the knee being repositioned between each replicate acquisition. After 3D reconstruction, the cartilage volume, the mean, and the maximal tibial cartilage thickness were determined by 3D Euclidean distance transformation. In the volunteers, the precision of the volume measurements was 2.3 % (CV%) in the medial and 2.6 % in the lateral tibia. The reproducibility of the mean cartilage thickness was similar (2.6 and 2.5 %, respectively), and that of the maximal thickness lower (6.5 and 4.4 %). The patients showed a considerable reduction in volume and thickness, the precision being comparable with that in the volunteers. We find that, using a new imaging protocol and computational algorithm, it is possible to determine tibial cartilage morphometry with high precision in healthy individuals as well as in patients with osteoarthritis.

Key words: Cartilage – MR imaging – Precision – Joint – Osteoarthritis 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • A. Hyhlik-Dürr
    • 1
  • S. Faber
    • 2
  • R. Burgkart
    • 3
  • T. Stammberger
    • 4
  • K. -P. Maag
    • 5
  • K. -H. Englmeier
    • 4
  • M. Reiser
    • 2
  • F. Eckstein
    • 1
  1. 1.Musculoskeletal Research Group, Institute of Anatomy, Ludwig-Maximilians-Universität, Pettenkoferstrasse 11, D-80336 Munich, GermanyDE
  2. 2.Institut für Radiologische Diagnostik, Klinikum der Ludwig-Maximilians-Universität (Standort Grosshadern, Marchioninistrasse 15, D-81377 Munich, GermanyDE
  3. 3.Klinik für Orthopädie und Sportorthopädie der Technischen Universität München, Ismaningerstrasse 22, D-81675 Munich, GermanyDE
  4. 4.Institut für Medizinische Informatik und Systemforschung (MEDIS), GSF-Forschungszentrum für Umwelt und Gesundheit, Neuherberg, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, GermanyDE
  5. 5.Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie, Klinikum Grosshadern, Marchioninistrasse 15, D-81377 Munich, GermanyDE

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