Ontology type: schema:ScholarlyArticle
2020-06-04
AUTHORSAnja Müller-Lutz, Benedikt Kamp, Armin M. Nagel, Alexandra Ljimani, Daniel Abrar, Christoph Schleich, Lena Wollschläger, Sven Nebelung, Hans-Jörg Wittsack
ABSTRACTObjectiveTo measure sodium relaxation times and concentrations in human wrists on a clinical magnetic resonance imaging (MRI) scanner with a density-adapted radial sequence.Materials and methodsSodium MRI of human wrists was conducted on a 3T MR system using a dual-tuned 1H/23Na surface coil. We performed two studies with 10 volunteers each investigating either sodium T1 (study 1) or sodium T2* (study 2) relaxation times in the radiocarpal joint (RCJ) and midcarpal joint (MCJ). Sodium concentrations of both regions were determined.ResultsNo differences for transversal of longitudinal relaxation times were found between RCJ and MCJ (T2,s*(RCJ) = (0.9 ± 0.4) ms; T2,s*(MCJ) = (0.9 ± 0.3) ms; T2,l*(RCJ) = (14.9 ± 0.9) ms; T2,l*(MCJ) = (13.9 ± 1.1) ms; T1(RCJ) = (19.0 ± 2.4) ms; T1(MCJ) = (18.5 ± 2.1) ms). Sodium concentrations were (157.7 ± 28.4) mmol/l for study 1 and (159.8 ± 29.1) mmol/l for study 2 in the RCJ, and (172.7 ± 35.6) mmol/l for study 1 and (163.4 ± 26.3) mmol/l for study 2 in the MCJ.ConclusionWe successfully determined sodium relaxation times and concentrations of the human wrist on a 3T MRI scanner. More... »
PAGES241-248
http://scigraph.springernature.com/pub.10.1007/s10334-020-00856-2
DOIhttp://dx.doi.org/10.1007/s10334-020-00856-2
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/32500389
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