Determination of knee joint cartilage thickness using three-dimensional magnetic resonance chondro-crassometry (3D MR-CCM)
| Autor: | Reinhard Putz, Karl-Hans Englmeier, Stefan Milz, Michael Haubner, Harald Sittek, Antonia Gavazzeni, Andreas Lösch, Maximilian F. Reiser, Erik Schulte, Felix Eckstein |
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| Rok vydání: | 1996 |
| Předmět: |
Adult
Cartilage Articular Male musculoskeletal diseases Accuracy and precision Materials science Knee Joint Coefficient of variation medicine Humans Radiology Nuclear Medicine and imaging Joint (geology) Aged Aged 80 and over Observer Variation medicine.diagnostic_test Cartilage Reproducibility of Results Magnetic resonance imaging Anatomy Middle Aged Magnetic Resonance Imaging medicine.anatomical_structure Female Patella Cadaveric spasm Biomedical engineering |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1522-2594 0740-3194 |
| DOI: | 10.1002/mrm.1910360213 |
| Popis: | The objective of this article was to analyze the accuracy and precision with which the quantitative distribution of articular cartilage can be determined in the knee joint using MRI. A three-dimensional (3D) technique that accounts for the out-of-plane deviation of the interface normal in strongly curved joint surfaces (3D MR-CCM) has been developed for cartilage thickness measurements. Eight cadaveric knee-joint specimens and six volunteers were imaged using a fat-suppressed gradient-echo sequence at a resolution of 2 x 0.31 x 0.31 mm3. Cartilage volumes and topographical thickness maps were obtained and compared with those derived from anatomical sections by image analysis. The deviation of the MR volumes from those of the sections was 1-12%, the coefficient of variation after repositioning ranged from 2.9% (patella) to 8.2% (lateral tibial plateau). Between 60% and 80% of all image points could be attributed to identical thickness intervals, less than 20% deviating by more than 0.5 mm. The intraobserver and interobserver reproducibilities were very high in both the specimens and the volunteers. In the knee joint, 3D reconstructions of the cartilages, and measurements that take into account the out-of-plane deviation of the interface normals (3D MR-CCM), are required. |
| Databáze: | OpenAIRE |
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