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Open Access Green as soon as Postprint is submitted to ZB.
Surface Size, Curvature Analysis and Assessment of Knee Joint Incongruity with MRI in vivo.
Magn. Reson. Med. 47, 554-561 (2002)
The purpose of this study was to develop an MR-based technique for quantitative analysis of joint surface size, surface curvature, and joint incongruity and to assess its reproducibility under in vivo imaging conditions. The surface areas were determined after 3D reconstruction of the joint by triangulation and the incongruity by Gaussian curvature analysis. The precision was tested by analyzing four replicated MRI datasets of human knees in 14 individuals. The algorithms were shown to produce accurate data in geometric test objects. The interscan precision was <4% (CV%) for surface area, 2.9-5.7 m(-1) (SD) for the mean principal curvature, and 4.1-7.4 m(-1) for congruence indices. Incongruity was highest in the femoropatellar joint (79.7 m(-1)) and lowest in the medial femorotibial joint (28.6 m(-1)). This technique will permit identification of the specific role of surface size, curvature, and incongruity as potential risk factors for osteoarthritis.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
diarthridial joints; MR imaging; curvature analysis; joint congruence; osteoarthritis
ISSN (print) / ISBN
0740-3194
e-ISSN
1522-2594
Journal
Magnetic Resonance in Medicine
Quellenangaben
Volume: 47,
Pages: 554-561
Publisher
Wiley
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Biological and Medical Imaging (IBMI)