Table 1.

Mean differences in peak circumferential Green strain across all sectors for the interstudy repeatability study in each volunteer by location, and mean (homogenized) circumferential Green strain and metrics of heterogeneity. Values represent means of both scans in each volunteer at the time of peak strain. Normalization is performed by dividing the value of interest by the mean circumferential strain. Range represents the difference from the maximum to the minimum value.

Location	Volunteer	Mean interstudy diff. in circ. strain ( ± SD)	Mean abs. Diff.	Mean circ. green strain ( ± SD)	Het. index	Norm. maximum	Norm. minimum	Norm. range
IAA	23 F	−0.005 ± 0.029	0.024	0.23 ± 0.06	0.28	1.61	0.62	1.00
	36 M	−0.001 ± 0.016	0.014	0.07 ± 0.03	0.46	1.72	0.31	1.41
Mean	−0.003 ± 0.023	0.019	0.15 ± 0.05	0.37	1.67	0.46	1.21
DTA	22 M	−0.005 ± 0.021	0.015	0.13 ± 0.04	0.29	1.47	0.62	0.85
	59 F	0.004 ± 0.017	0.013	0.06 ± 0.01	0.26	1.43	0.55	0.88
Mean	−0.001 ± 0.019	0.014	0.09 ± 0.03	0.28	1.45	0.58	0.87
DAA	19 F	0.004 ± 0.035	0.027	0.14 ± 0.07	0.52	1.99	0.09	1.89
	37 F	0.000 ± 0.015	0.011	0.08 ± 0.05	0.67	1.95	−0.18	2.13
Mean	0.002 ± 0.027	0.019	0.11 ± 0.06	0.59	1.97	−0.04	2.01
ALL	Mean	−0.001 ± 0.023	0.017	0.12 ± 0.05	0.41	1.7	0.33	1.36