TY - GEN
T1 - 3D Shear wave imaging
T2 - 2010 IEEE International Ultrasonics Symposium, IUS 2010
AU - Orescanin, Marko
AU - Wang, Yue
AU - Insana, Michael
PY - 2010
Y1 - 2010
N2 - The wave equation describing shear wave propagation in three-dimensional (3-D) viscoelastic media is solved numerically with a finite differences time domain (FDTD) method. Solutions are simulated in terms of scatterer velocity waves and verified via comparison to 3-D experimentally acquired wave fields in a heterogenous hydrogel phantom. The numerical algorithm is used as a tool to study wave refraction occurring at the surface of heterogeneities and its effect on complex shear modulus estimation. We used an algebraic reconstruction technique for direct inversion of the wave equation to image the shear modulus and study artifacts produced when reconstructing moduli from 2-D and 3-D velocity data. Although 3-D velocity estimates are required in general, there are object geometries where 2-D reconstructions provide accurate estimations of the material properties.
AB - The wave equation describing shear wave propagation in three-dimensional (3-D) viscoelastic media is solved numerically with a finite differences time domain (FDTD) method. Solutions are simulated in terms of scatterer velocity waves and verified via comparison to 3-D experimentally acquired wave fields in a heterogenous hydrogel phantom. The numerical algorithm is used as a tool to study wave refraction occurring at the surface of heterogeneities and its effect on complex shear modulus estimation. We used an algebraic reconstruction technique for direct inversion of the wave equation to image the shear modulus and study artifacts produced when reconstructing moduli from 2-D and 3-D velocity data. Although 3-D velocity estimates are required in general, there are object geometries where 2-D reconstructions provide accurate estimations of the material properties.
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U2 - 10.1109/ULTSYM.2010.5935669
DO - 10.1109/ULTSYM.2010.5935669
M3 - Conference contribution
AN - SCOPUS:80054744550
SN - 9781457703829
T3 - Proceedings - IEEE Ultrasonics Symposium
SP - 1035
EP - 1038
BT - 2010 IEEE International Ultrasonics Symposium, IUS 2010
Y2 - 11 October 2010 through 14 October 2010
ER -