2003
DOI: 10.1016/s1361-8415(03)00038-0
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Spatio-temporal directional filtering for improved inversion of MR elastography images

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Cited by 301 publications
(190 citation statements)
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“…A directional filter was applied to the displacements to remove backward-propagating (reflected) components based on their position in the Fourier domain [26], [29]. The time delays between each lateral pair of tracking locations were computed via normalized cross-correlation of the tissue velocity signals at each pixel with the same depth.…”
Section: Finite Element Methods Simulationmentioning
confidence: 99%
“…A directional filter was applied to the displacements to remove backward-propagating (reflected) components based on their position in the Fourier domain [26], [29]. The time delays between each lateral pair of tracking locations were computed via normalized cross-correlation of the tissue velocity signals at each pixel with the same depth.…”
Section: Finite Element Methods Simulationmentioning
confidence: 99%
“…The process of directionally filtering displacement to isolate specific components (directions) of wave propagation has been described and used by others to enhance isotropic material estimates [27]. Direct inversion of MRE displacement fields by fitting to complete wave equations has been used to approximate anisotropic elastic mechanical properties [28,29].…”
Section: Estimation Of Transversely Isotropic Materialsmentioning
confidence: 99%
“…The region behind an inclusion is difficult to reconstruct using the standard methods based on the Helmholtz equation, and typically results in a very noisy reconstruction in that region. To overcome this limitation, special filters are usually applied to eliminate the noise in such a region (see, for example, Manduca et al, 2003). However, the use of such filters could also result in missing inclusions behind other inclusions.…”
Section: Shear Modulus Reconstruction From Mr Measured Datamentioning
confidence: 99%