Table 4.

Inter- and intra-observer variability by intraclass correlation coefficient

Technique	Intra-observer		Inter-observer
	ICC	p value	ICC	p value
Tagging
Ecc	0.982	< 0.001	0.909	< 0.001
Err	0.936	< 0.001	0.307	0.277
Ell	0.835	0.002	0.700	0.029
DENSE
Ecc	0.961	< 0.001	0.973	< 0.001
Err	0.948	< 0.001	0.644	0.027
Ell	0.761	0.004	0.476	0.122
FT-Tomtec
Ecc	0.993	< 0.001	0.992	< 0.001
Err	0.950	< 0.001	0.993	0.000
Ell	0.938	< 0.001	0.921	< 0.001
FT-CIM
Ecc	0.935	< 0.001	0.955	< 0.001
Err	0.864	< 0.001	0.963	< 0.001
Ell	0.944	< 0.001	0.987	0.000
FT-Circle
Ecc	0.947	< 0.001	0.865	0.002
Err	0.849	0.003	0.762	0.018
Ell	0.910	< 0.001	0.948	< 0.001

Abbreviations: Ecc circumferential strain, Err radial strain, Ell longitudinal strain, ICC intraclass correlation coefficient