Title :
An inversion method for the determination of elastic moduli in tissue using magnetic resonance elastography
Author :
Romano, Anthony J. ; Bucaro, Joseph A. ; Ehman, Richard L.
Author_Institution :
Naval Res. Lab., Washington, DC, USA
Abstract :
The method termed magnetic resonance elastography (MRE) permits a direct measurement of elastic displacements within materials that are subject to forced vibration. Additionally, these displacements are related to the material parameters through the equations of elasticity. In this paper, we give a brief presentation of a method for the determination of the elastic moduli (i.e. the components of the Hooke´s tensor) given a knowledge of the elastic displacements though an inversion of the equations of elasticity. Experimental results are presented and the issue of anisotropy is addressed.
Keywords :
biological tissues; biomechanics; biomedical MRI; diseases; elastic moduli; inverse problems; shear modulus; tumours; vibrations; Hooke tensor; anisotropy; direct measurement; elastic displacements; elastic moduli; elasticity equations; forced vibration; inversion method; magnetic resonance elastography; material parameters; tissue; Anisotropic magnetoresistance; Biological materials; Displacement measurement; Elasticity; Equations; Force measurement; Magnetic materials; Magnetic resonance; Tensile stress; Vibration measurement;
Conference_Titel :
Biomedical Imaging, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7584-X
DOI :
10.1109/ISBI.2002.1029434
