{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Wagner F"],"funding":["Deutsche Forschungsgemeinschaft"],"pagination":["e0179276"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC5476261"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["12(6)"],"pubmed_abstract":["To use the \"apparent diffusion coefficient\" (Dapp) as a quantitative imaging parameter, well-suited test fluids are essential. In this study, the previously proposed aqueous solutions of polyvinylpyrrolidone (PVP) were examined and temperature calibrations were obtained. For example, at a temperature of 20°C, Dapp ranged from 1.594 (95% CI: 1.593, 1.595) μm2/ms to 0.3326 (95% CI: 0. 3304, 0.3348) μm2/ms for PVP-concentrations ranging from 10% (w/w) to 50% (w/w) using K30 polymer lengths. The temperature dependence of Dapp was found to be so strong that a negligence seems not advisable. The temperature dependence is descriptively modelled by an exponential function exp(c2 (T - 20°C)) and the determined c2 values are reported, which can be used for temperature calibration. For example, we fi"],"journal":["PloS one"],"pubmed_title":["Temperature and concentration calibration of aqueous polyvinylpyrrolidone (PVP) solutions for isotropic diffusion MRI phantoms."],"pmcid":["PMC5476261"],"funding_grant_id":["LA 2804/1-3"],"pubmed_authors":["Faust J","Demberg K","Wagner F","Bickelhaupt S","Maier-Hein K","Laun FB","Rivkin B","Nagel AM","Ladd ME","Mlynarska A","Lindemann L","Bach M","Maier F","Kuder TA"],"additional_accession":[]},"is_claimable":false,"name":"Temperature and concentration calibration of aqueous polyvinylpyrrolidone (PVP) solutions for isotropic diffusion MRI phantoms.","description":"To use the \"apparent diffusion coefficient\" (Dapp) as a quantitative imaging parameter, well-suited test fluids are essential. In this study, the previously proposed aqueous solutions of polyvinylpyrrolidone (PVP) were examined and temperature calibrations were obtained. For example, at a temperature of 20°C, Dapp ranged from 1.594 (95% CI: 1.593, 1.595) μm2/ms to 0.3326 (95% CI: 0. 3304, 0.3348) μm2/ms for PVP-concentrations ranging from 10% (w/w) to 50% (w/w) using K30 polymer lengths. The temperature dependence of Dapp was found to be so strong that a negligence seems not advisable. The temperature dependence is descriptively modelled by an exponential function exp(c2 (T - 20°C)) and the determined c2 values are reported, which can be used for temperature calibration. For example, we fi","dates":{"release":"2017-01-01T00:00:00Z","publication":"2017","modification":"2025-04-18T13:23:28.669Z","creation":"2019-03-27T02:47:56Z"},"accession":"S-EPMC5476261","cross_references":{"pubmed":["28628638"],"doi":["10.1371/journal.pone.0179276"]}}