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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: Ultrasound Med Biol. 2011 Dec 16;38(2):312–323. doi: 10.1016/j.ultrasmedbio.2011.10.014

Figure 3.

Figure 3

Figure 3

Figure 3

Figure 3

Figure 3

Figure 3

Figure 3

Figure 3

An example of shear wave displacements from radiation force with reflection. (a) A frame of the shear wave displacements shows a reflected wave. An image slice at depth A of (a) is shown in (b), where the direct wave is clearly discernible from the reflected wave. (c) illustrates the concept of Radon transformation with angle β and radial distance xp. (d) displays the result of radon transform. The peak region is marked. Each of the points inside the peak region converts to a single line in the original image. Combining these lines and smoothing produces a final motion mask shown in (e). (f) shows the motion-filtered image. The phase distribution and the estimated shear speed are shown in (g) and (h), respectively, with and without motion filtering.