Chondromalacia of the knee: evaluation with a fat-suppression three-dimensional SPGR imaging after intravenous contrast injection

Journal of Magnetic Resonance Imaging : JMRI
J S SuhS J Kim

Abstract

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.

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Citations

Dec 16, 1998·Journal of Magnetic Resonance Imaging : JMRI·S RuehmJ Hodler
Mar 29, 2002·Computerized Medical Imaging and Graphics : the Official Journal of the Computerized Medical Imaging Society·Apostolos H KarantanasPanagiotis Kitsoulis
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Dec 20, 2002·Clinics in Sports Medicine·Ryland B EdwardsMark D Markel
Mar 15, 2012·Scandinavian Journal of Surgery : SJS : Official Organ for the Finnish Surgical Society and the Scandinavian Surgical Society·V M MattilaH Pihlajamäki
Apr 3, 2010·The Journal of Bone and Joint Surgery. American Volume·Harri K PihlajamäkiVille M Mattila
Oct 26, 1999·Physics in Medicine and Biology·T Lyyra-LaitinenJ S Jurvelin

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