Correlation of laminated mr appearance of articular cartilage with histology, ascertained by artificial landmarks on the cartilage

Dong Joon Kim, Jin Suck Suh, Eun Kee Jeong, Kyoo Ho Shin, Woo Ick Yang

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The object of this study was to correlate the laminae of articular cartilage on magnetic resonance (MR) imaging with histologic layers. T1- and fast spin-echo T2-weighted images of articular cartilage with artificial landmarks were obtained under high gradient echo strength (25 mT/m) conditions and a voxel size of 78 x 156 x 2000 μm. Images were also obtained with a) changed frequency-encoding directions; b) changed readout gradient strength; and c) a varied number of phase-encoding steps. T2 mapping was performed with angular variations. Artificial landmarks allowed accurate comparison between the laminae on MR images and the histologic zones. No alterations of the laminae were noted by changing the frequency gradient direction. Altering readout gradient strengths did not show a difference in the thickness of the laminae, and increasing the phase-encoding steps resulted in a more distinct laminated appearance, ruling out chemical shift, susceptibility, and truncation artifacts. The T2 mapping profile showed an anisotropic angular dependency from the magic angle effect. In conclusion, the laminated appearance of articular cartilage on spin-echo and fast spin- echo MR images correlated with the histologic zones rather than MR artifacts.

Original languageEnglish
Pages (from-to)57-64
Number of pages8
JournalJournal of Magnetic Resonance Imaging
Volume10
Issue number1
DOIs
Publication statusPublished - 1999 Jul

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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