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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2017 Sep 6;64(12):1784–1794. doi: 10.1109/TUFFC.2017.2749566

Fig. 1.

Fig. 1

Diagram of the STL-SWEI processing sequence in three dimensions (right). A set of pushes are sequentially delivered to positions (xp,yp), tracking the response at one or more locations (xt,yt). A characteristic time of flight Txp,yp is found between each push location and the single track location. The shear wave speed estimate is the inverse of the local gradient of arrival times ∥∇xp,ypT∥−1. A volume is made by combining the slices from multiple depths.