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Chondromalacia of the knee: Evaluation with a fat‐suppression three‐dimensional SPGR imaging after intravenous contrast injection
Author(s) -
Suh JinSuck,
Cho JaeHyun,
Shin KyooHo,
Kim Sung Jae
Publication year - 1996
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880060608
Subject(s) - chondromalacia , medicine , cartilage damage , cartilage , articular cartilage , chondropathy , arthroscopy , radiology , magnetic resonance imaging , nuclear medicine , osteoarthritis , pathology , anatomy , alternative medicine
Twenty‐one MRI studies with a fat‐suppression three‐dimensional spoiled gradient‐recalled echo in a steady state (3D SPGR) pulse sequence after intravenous contrast injection were evaluated to assess the accuracy in depicting chondromalacia of the knee. On the basis of MR images, chondromalacia and its grade were determined in each of five articular cartilage regions (total, 105 regions) and then the results were compared to arthroscopic findings. The sensitivity, specificity, and accuracy of MRI were 70%, 99%, and 93%, respectively. MR images depicted 7 of 11 lesions of arthroscopic grade 1 or 2 chondromalacia, and seven of nine lesions of arthroscopic grade 3 or 4 chondromalacia. The cartilage abnormalities in all cases appeared as focal lesions with high signal intensity. Intravenous contrast‐injection, fat‐suppression 3D SPGR imaging showed high specificity in excluding cartilage abnormalities and may be considered as an alternative to intra‐articular MR arthrography when chondromalacia is suspected.