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- W2793438451 abstract "The mechanical properties of brain tissue in vivo determine the response of the brain to rapid skull acceleration. These properties are thus of great interest to the developers of mathematical models of traumatic brain injury (TBI) or neurosurgical simulations. Animal models provide valuable insight that can improve TBI modeling. In this study we compare estimates of mechanical properties of the Yucatan mini-pig brain in vivo and ex vivo using magnetic resonance elastography (MRE) at multiple frequencies. MRE allows estimations of properties in soft tissue, either in vivo or ex vivo, by imaging harmonic shear wave propagation. Most direct measurements of brain mechanical properties have been performed using samples of brain tissue ex vivo. It has been observed that direct estimates of brain mechanical properties depend on the frequency and amplitude of loading, as well as the time post-mortem and condition of the sample. Using MRE in the same animals at overlapping frequencies, we observe that porcine brain tissue in vivo appears stiffer than porcine brain tissue samples ex vivo at frequencies of 100 Hz and 125 Hz, but measurements show closer agreement at lower frequencies." @default.
- W2793438451 created "2018-03-29" @default.
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- W2793438451 date "2018-03-01" @default.
- W2793438451 modified "2023-10-15" @default.
- W2793438451 title "Mechanical properties of porcine brain tissue in vivo and ex vivo estimated by MR elastography" @default.
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- W2793438451 doi "https://doi.org/10.1016/j.jbiomech.2018.01.016" @default.
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