TABLE 4.

Local strains predicted from ultrasound elastography using Eqs. (3)–(5), where the estimated time delay was ± the sampling period, i.e., ${\mathit{T}}_{\mathbf{d}}^{\mathit{i}}\pm 1\times {10}^{-8}$, i = 1, 2, 3 at each step.

Comp. (μm)	Strain top 8% gel	Strain middle 4% gel	Strain bottom 8% gel
80	0.00464–0.00908	0.00719–0.01729	0.00123–0.01117
120	0.00689–0.01132	0.01489–0.02500	0.00356–0.01351
160	0.00878–0.01322	0.02301–0.03311	0.00566–0.01561