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MR imaging of knee hyaline cartilage: Evaluation of two- and three-dimensional sequences

✍ Scribed by Osmo Tervonen; Mark J. Dietz; Stephen W. Carmichael; Richard L. Ehman

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
736 KB
Volume
3
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

Magnetic resonance (MR) imaging of cadaveric knees was performed to determine optimal sequences for visualization of hyaline cartilage. Full‐thickness cartilage lesions ranging in diameter from 1 to 5 mm and a partial‐thickness cartilage lesion 15 mm in diameter were created in the femoral articular surfaces of three cadaveric knees. The knees were then imaged with a 1.5‐T imager with various two‐dimensional and high‐resolution three‐dimensional (3D) techniques. After imaging, the knee specimens were sectioned for evaluation. Measurements of cartilage thickness in fast spin‐echo images correlated best with those in the gross specimen. Diffuse areas of cartilage thinning were also most accurately identified with fast spinecho images. Small, focal cartilage defects were best delineated in 3D SPGR (spoiled GRASS [gradient‐recalled acquisition in the steady state]) images.

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