Articular cartilage: correlation of histologic zones with signal intensity at MR imaging.

Abstract:

:Zones of high and low signal intensity on magnetic resonance (MR) images of articular cartilage were correlated with the four histologic zones normally found in such cartilage. Grossly normal articular cartilage from knees and ankles of a fresh cadaver were used in the study. The three zones identified on MR images included a low-intensity zone near the articular surface, a zone of higher signal intensity next to that, and a second zone of low intensity that was deep to the two others. The location of the superficial low-intensity zone corresponded to dense, tangentially oriented layers of collagen in the superficial histologic zone. Higher signal intensity deep to the superficial low-intensity zone correlated with cartilage in the transitional zone. The deep low-intensity zone correlated with a combination of deep radiate and calcified cartilage and cortical bone. Results of this study indicate that, with high resolution, MR imaging may demonstrate three zones of differing signal intensity in articular cartilage. The superficial low-intensity zone may be a useful marker of the surface of normal articular cartilage.

journal_name

Radiology

journal_title

Radiology

authors

Modl JM,Sether LA,Haughton VM,Kneeland JB

doi

10.1148/radiology.181.3.1947110

subject

Has Abstract

pub_date

1991-12-01 00:00:00

pages

853-5

issue

3

eissn

0033-8419

issn

1527-1315

journal_volume

181

pub_type

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