0000000000243228

AUTHOR

Michael Haubner

showing 2 related works from this author

Determination of knee joint cartilage thickness using three-dimensional magnetic resonance chondro-crassometry (3D MR-CCM)

1996

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 …

AdultCartilage ArticularMalemusculoskeletal diseasesAccuracy and precisionMaterials scienceKnee JointCoefficient of variationKnee JointmedicineHumansRadiology Nuclear Medicine and imagingJoint (geology)AgedAged 80 and overObserver Variationmedicine.diagnostic_testCartilageReproducibility of ResultsMagnetic resonance imagingAnatomyMiddle AgedMagnetic Resonance Imagingmedicine.anatomical_structureFemalePatellaCadaveric spasmBiomedical engineeringMagnetic Resonance in Medicine
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Repeatability of patellar cartilage thickness patterns in the living, using a fat-suppressed magnetic resonance imaging sequence with short acquisiti…

1998

A fast, reproducible, and noninvasive method is required for quantifying cartilage thickness clinically and for studying the deformation of articular cartilage during and after mechanical loading in vivo. The objective of the current investigation was to test the repeatability of regional distribution patterns of patellar cartilage thickness in the living on the basis of a fat-suppressed magnetic resonance imaging sequence with a short acquisition time and three-dimensional digital data processing. The knees of eight healthy volunteers were transversally imaged with a fat-suppressed FLASH-3D (fast low angle shot) sequence (acquisition time: 4 minutes and 10 seconds). In each case, the joint…

AdultCartilage ArticularMalePatellar cartilageMaterials sciencemedicine.diagnostic_testCoefficient of variationCartilageReproducibility of ResultsMagnetic resonance imagingPatellaRepeatabilityImage EnhancementMagnetic Resonance ImagingNuclear magnetic resonancemedicine.anatomical_structureHealthy volunteersImage Processing Computer-AssistedmedicineHumansFemaleOrthopedics and Sports MedicineAcquisition timeDigital data processingBiomedical engineeringJournal of Orthopaedic Research
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