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Osteoarthritis is a common chronic degenerative disease that causes pain and disability worldwide, with increasing incidence throughout the world. The osteochondral junction is a dynamic region of the joint that is associated with osteoarthritis development and progression. MR sequences with ultrashort echo time are of particular concern because they will provide images of high resolution and contrast in this region. We also discuss basic principles and recent developments of UTE MR sequences focusing on the osteochondral junction.
Source link: https://doi.org/10.1002/nbm.4843
Due to the short apparent transverse relaxation time of ACL, conventional magnetic resonance imaging has often shows no progress in anterior cruciate ligament. Ultrashort echo time MRI is capable of imaging ACL with high signal, which allows quantitative ACL evaluation. This research sought to establish a correlation between human ACL specimens' mechanical and microstructural characteristics with quantitative three-dimensional UTE Cones MRI measurements. ACL specimens were obtained from 13 donors' cadaveric knee joints. Using a uniaxial tensile mechanical test, ACL elastic modulus was determined. UTE-MRI biomarkers can be useful noninvasive tools for ACL mechanical evaluation.
Source link: https://doi.org/10.1002/jor.25266
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