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European Radiology

, Volume 14, Issue 2, pp 208–214 | Cite as

MR appearance of cartilage defects of the knee: preliminary results of a spiral CT arthrography-guided analysis

  • B. C. Vande BergEmail author
  • F. E. Lecouvet
  • B. Maldague
  • J. Malghem
Musculoskeletal

Abstract

The aim of this study was to determine signal intensity patterns of cartilage defects at MR imaging. The MR imaging (3-mm-thick fat-suppressed intermediate-weighted fast spin-echo images) was obtained in 31 knees (21 male and 10 female patients; mean age 45.5 years) blindly selected from a series of 252 consecutive knees investigated by dual-detector spiral CT arthrography. Two radiologists determined in consensus the MR signal intensity of the cartilage areas where cartilage defects had been demonstrated on the corresponding reformatted CT arthrographic images. There were 83 cartilage defects at spiral CT arthrography. In 52 (63%) lesion areas, the MR signal intensity was higher than that of adjacent normal cartilage with signal intensity equivalent to (n=31) or lower than (n=21) that of articular fluid. The MR signal intensity was equivalent to that of adjacent normal cartilage in 17 (20%) lesion areas and lower than that of adjacent cartilage in 8 (10%) lesion areas. In 6 (7%) lesion areas, mixed low and high signal intensity was observed. The MR signal intensity of cartilage defects demonstrated on spiral CT arthrographic images varies from low to high on fat-suppressed intermediate-weighted fast spin-echo MR images obtained with our equipment and MR parameters.

Keywords

Knee Cartilage Arthrography CT MR imaging 

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • B. C. Vande Berg
    • 1
    Email author
  • F. E. Lecouvet
    • 1
  • B. Maldague
    • 1
  • J. Malghem
    • 1
  1. 1.Department of RadiologyCliniques Universitaires St. LucBrusselsBelgium

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