TABLE I:

Table of correlation values for subjects with repeat acquisitions sorted by subject ID. Some subjects, e.g. 13, were scanned more than twice, permitting more than one comparison. For example, subject 13 was scanned three times, permitting us to compare acquisitions 1 and 2, 2 and 3 , and 1 and 3, thus giving three comparisons. We obtained 6 comparisons from 4 scans of subject $15.\mu$ is the linear elastic shear modulus; $\gamma$ is the nonlinear elastic parameter; $B/M$ indicates benign or malignant on pathology; $Y/N$ indicates whether frame-average strain used to recover $\gamma$ was $\ge 14\mathrm{\%}$. Example images are shown for those entries listed in bold font.

ID	B-Mode Correl	Sirain Correl	$\mu$ Correl	$\gamma$ Correl	B/M	Final Strain ≥ 14%?
1	0.922	0.830	0.952	0.963	B	Y
2	0.820	0.709	0.808	0.910	B	Y
3	0.894	0.852	0.932	0.878	M	Y
4	0.709	0.685	0.791	0.821	M	Y
4	0.751	0.708	0.847	0.776	M	Y
4	0.924	0.812	0.903	0.945	M	Y
5	0.910	0.797	0.873	0.880	B	Y
6	0.927	0.801	0.950	0.918	B	N
7	0.951	0.877	0.927	0.702	B	N
8	0.865	0.666	0.761	0.464	M	Y
9	0.932	0.826	0.915	0.739	B	N
10	0.934	0.935	0.976	0.359	M	N
11	0.947	0.627	0.702	0.644	M	N
12	0.966	0.853	0.933	0.988	B	Y
13	0.0967	0.828	0.956	0.528	B	N
13	00.852	0.590	0.772	0.200	B	N
13	0.851	0.569	0.818	0.313	B	N
14	0.920	0.678	0.792	0.605	M	N
14	0.900	0.641	0.763	0.651	M	N
14	0.881	0.565	0.741	0.827	M	N
15	0.918	0.794	0.926	0.926	M	N
15	0.873	0.797	0.925	0.897	M	N
15	0.587	0.718	0.856	0.826	M	N
15	0.866	0.791	0.889	0.833	M	N
15	0.665	0.735	0.848	0.785	M	N
15	0.762	0.775	0.888	0.840	M	N
16	0.680	0.532	0.658	0.304	B	Y
17	0.753	0.435	0.488	0.670	B	N
18	0.704	0.259	0.415	−0.155	B	N
19	0.915	0.740	0.827	0.844	B	Y
20	0.875	0.716	0.793	0.947	B	Y
20	0.796	0.672	0.782	0.852	B	Y
20	0.789	0.636	0.725	0.910	B	Y
20	0.785	0.616	0.768	0.786	B	Y
20	0.814	0.619	0.765	0.842	B	Y
20	0.900	0.741	0.847	0.914	B	Y
Avg	0.847	0.706	0.820	0.706
Std	0.095	0.B3	0.121	0.133