| Magnetic resonance elastography compared with rotational rheometry for in vitro brain tissue viscoelasticity measurement. | |
| | |
MedLine Citation:
|
PMID: 18080819 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Magnetic resonance elastography (MRE) is an increasingly used method for non-invasive determination of tissue stiffness. MRE has shown its ability to measure in vivo elasticity or viscoelasticity depending on the chosen rheological model. However, few data exist on quantitative comparison of MRE with reference mechanical measurement techniques. MRE has only been validated on soft homogeneous gels under both Hookean elasticity and linear viscoelasticity assumptions, but comparison studies are lacking concerning viscoelastic properties of complex heterogeneous tissues. In this context, the present study aims at comparing an MRE-based method combined with a wave equation inversion algorithm to rotational rheometry. For this purpose, experiments are performed on in vitro porcine brain tissue. The dynamic behavior of shear storage (G') and loss (G ('')) moduli obtained by both rheometry and MRE at different frequency ranges is similar to that of linear viscoelastic properties of brain tissue found in other studies. This continuity between rheometry and MRE results consolidates the quantitative nature of values found by MRE in terms of viscoelastic parameters of soft heterogeneous tissues. Based on these results, the limits of MRE in terms of frequency range are also discussed. |
| | |
Authors:
|
Jonathan Vappou; Elodie Breton; Philippe Choquet; Christian Goetz; Rémy Willinger; André Constantinesco |
Related Documents
:
|
17879769 - Theoretical analysis of thermal damage in biological tissues caused by laser irradiation. 1200399 - A geometric model of the rat kidney. 20369989 - Third- and fourth-order elasticities of biological soft tissues. 15535189 - A probe for immittance spectroscopy based on the parallel electrode technique. 19293919 - Quantitative photoacoustic measurement of tissue optical absorption spectrum aided by a... 20099329 - Asymmetries of the balanced ssfp profile. part ii: white matter. 21060599 - Adaptive optics for in-orbit aberration correction: spherical aberration feasibility st... 20234579 - Profile dispersion characteristics in high-bandwidth graded-index optical fibers. 19550479 - Optical magnetic plasma in artificial flowers. |
Publication Detail:
|
Type: Comparative Study; Evaluation Studies; In Vitro; Journal Article; Research Support, Non-U.S. Gov't Date: 2007-12-15 |
Journal Detail:
|
Title: Magma (New York, N.Y.) Volume: 20 ISSN: 0968-5243 ISO Abbreviation: MAGMA Publication Date: 2007 Dec |
Date Detail:
|
Created Date: 2008-01-04 Completed Date: 2008-05-02 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9310752 Medline TA: MAGMA Country: Germany |
Other Details:
|
Languages: eng Pagination: 273-8 Citation Subset: IM |
Affiliation:
|
Institut de mécanique des fluides et des solides, UMR 7507 CNRS-Université Louis Pasteur, Strasbourg, France. jvappou@imfs.u-strasbg.fr |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Brain / physiology* Elasticity Elasticity Imaging Techniques / instrumentation, methods*, statistics & numerical data Image Processing, Computer-Assisted Rheology / methods* Rotation Sus scrofa Viscosity |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Temperature rise during polymerization of three different provisional materials.
Next Document: Chloroquine retinopathy: lipofuscin- and melanin-related fundus autofluorescence, optical coherence ...