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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Klatt, D.
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Topics
Publications (7/7 displayed)
- 2010Viscoelasticity-based MR elastography of skeletal muscle.citations
- 2010Viscoelasticity-based staging of hepatic fibrosis with multifrequency MR elastography.citations
- 2010Viscoelastic properties of liver measured by oscillatory rheometry and multifrequency magnetic resonance elastography.citations
- 2008Non-invasive measurement of brain viscoelasticity using magnetic resonance elastography.citations
- 2008Assessment of liver viscoelasticity using multifrequency MR elastography.citations
- 2007Three-dimensional analysis of shear wave propagation observed by in vivo magnetic resonance elastography of the brain.citations
- 2007Noninvasive assessment of the rheological behavior of human organs using multifrequency MR elastography: a study of brain and liver viscoelasticity.citations
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article
Viscoelastic properties of liver measured by oscillatory rheometry and multifrequency magnetic resonance elastography.
Abstract
The mechanical properties of liver can sensitively indicate the progression of hepatic fibrosis. Mechanical tissue characterization involves the analysis of the complex shear modulus measured either by oscillatory rheometry or by in vivo elastography. In this study, bovine liver specimens were investigated by oscillatory rheometry and multifrequency magnetic resonance elastography (MRE) in a common frequency range between 25.0 and 62.5 Hz. The results were compared with in vivo MRE of human liver. Storage and loss moduli were quantified, and the data were also analyzed employing a springpot model, yielding a stiffness-related parameter of 2.96+/-0.53 kPa in bovine liver by rheometry and of 2.20+/-0.45 kPa in human liver by in vivo MRE. Furthermore, MRE of excised bovine liver showed that stiffness tended to increase with decreasing sample temperature. In conclusion, mechanical tissue characterization by multifrequency MRE agrees well with oscillatory rheometry, which validates MRE as a method for investigating the rheology of liver tissue.