Home > Publications database > Temperature and concentration calibration of aqueous polyvinylpyrrolidone (PVP) solutions for isotropic diffusion MRI phantoms. > print |
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024 | 7 | _ | |a 10.1371/journal.pone.0179276 |2 doi |
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100 | 1 | _ | |a Wagner, Friedrich |0 P:(DE-He78)ac8ed626934034ffb8408121935e7680 |b 0 |e First author |u dkfz |
245 | _ | _ | |a Temperature and concentration calibration of aqueous polyvinylpyrrolidone (PVP) solutions for isotropic diffusion MRI phantoms. |
260 | _ | _ | |a Lawrence, Kan. |c 2017 |b PLoS |
336 | 7 | _ | |a article |2 DRIVER |
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520 | _ | _ | |a 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 find the value 0.02952 K-1 for 30% (w/w) PVP-concentration and K30 polymer length. In general, aqueous PVP solutions were found to be suitable to produce easily applicable and reliable Dapp-phantoms. |
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700 | 1 | _ | |a Faust, Jonas |0 P:(DE-HGF)0 |b 5 |
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700 | 1 | _ | |a Ladd, Mark |0 P:(DE-He78)022611a2317e4de40fd912e0a72293a8 |b 10 |u dkfz |
700 | 1 | _ | |a Maier-Hein, Klaus |0 P:(DE-He78)33c74005e1ce56f7025c4f6be15321b3 |b 11 |u dkfz |
700 | 1 | _ | |a Bickelhaupt, Sebastian |0 P:(DE-He78)d2d971750bce6217eb90fff9b01e61f9 |b 12 |u dkfz |
700 | 1 | _ | |a Bach, Michael |0 P:(DE-He78)8dc01b0de0431cb7eced92277c1f04c7 |b 13 |e Last author |u dkfz |
773 | _ | _ | |a 10.1371/journal.pone.0179276 |g Vol. 12, no. 6, p. e0179276 - |0 PERI:(DE-600)2267670-3 |n 6 |p e0179276 - |t PLoS one |v 12 |y 2017 |x 1932-6203 |
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