Natural shear waves in the neonatal brain potentially provide more information about mechanical properties of the brain in healthy and diseased state. Since these shear waves can be omnipresent, a direction-independent method to determine the propagation speeds of these shear waves is needed. In this study, we developed a direction-independent 3D wavenumber-frequency-domain technique to estimate the shear wave propagation speeds. Furthermore, a dominant propagation direction of the shear waves can potentially be determined with this technique. Measurements were performed in a homogeneous bulk phantom. The obtained results show a good agreement with the propagation speeds obtained with a Radon transform applied on 2D measurements and a clinical system with an elasticity mode.

f, k-domain, natural shear waves, neonatal brain, Shear wave elastography, three-dimensional,
2019 IEEE International Ultrasonics Symposium, IUS 2019
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Erasmus MC: University Medical Center Rotterdam

Kortenbout, A.J, Keijzer, L.B.H, de Jong, N, Bosch, J.G, & Vos, H.J. (2019). Direction-independent bulk shear wave speed in 3D. In IEEE International Ultrasonics Symposium, IUS (pp. 209–212). doi:10.1109/ULTSYM.2019.8925636