Interobserver reproducibility of quantitative cartilage measurements: comparison of B-spline snakes and manual segmentation

The objective of this work was to develop a segmentation technique for thickness measurements of the articular cartilage in MR images and to assess the interobserver reproducibility of the method in comparison with manual segmentation. The algorithm is based on a B-spline snakes approach and is able...

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Bibliographic Details
Published in:Magnetic resonance imaging 1999-09, Vol.17 (7), p.1033-1042
Main Authors: Stammberger, Tobias, Eckstein, Felix, Michaelis, Markus, Englmeier, Karl-Hans, Reiser, Maximilian
Format: Article
Language:English
Subjects:
Articular cartilage
B-spline snakes
Biological and medical sciences
Cartilage thickness
Cartilage, Articular - anatomy & histology
Deformable models
Humans
Image Processing, Computer-Assisted
Investigative techniques, diagnostic techniques (general aspects)
Knee Joint
Magnetic Resonance Imaging - methods
Medical sciences
Observer Variation
Osteoarticular system. Muscles
Radiodiagnosis. Nmr imagery. Nmr spectrometry
Reproducibility of Results
Segmentation
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Summary:The objective of this work was to develop a segmentation technique for thickness measurements of the articular cartilage in MR images and to assess the interobserver reproducibility of the method in comparison with manual segmentation. The algorithm is based on a B-spline snakes approach and is able to delineate the cartilage boundaries in real time and with minimal user interaction. The interobserver reproducibility of the method, ranging from 3.3 to 13.6% for various section orientations and joint surfaces, proved to be significantly superior to manual segmentation.
ISSN:0730-725X
1873-5894
DOI:10.1016/S0730-725X(99)00040-5