Table 1.

Intraobserver and Interobserver reproducibility of LV strain and torsion

	Slice	Intraobserver ICC	Interobserver ICC
Ecc	Base	0.8**	0.8**
	Mid	0.77**	0.7 **
	Apex	0.8**	0.8 *
Err	Base	0.9**	0.9 **
	Mid	0.9**	0.8 **
	Apex	0.5**	0.7 **
Lambda 1	Base	0.8**	0.8 **
	Mid	0.8**	0.6 **
	Apex	0.6**	0.7 **
Lambda 2	Base	0.9**	0.8 **
	Mid	0.7**	0.7 **
	Apex	0.8**	0.8 **
Angle	Base	0.7**	0.7 **
	Mid	0.7**	0.5 **
	Apex	0.5*	0.5 *
Time to peak Ecc	Mid	0.5*	0.3 *
Systolic circumferential strain rate	Mid	−0.1	0.4*
Early diastolic circumferential strain rate	Mid	0.5*	0.2
Torsion	-	0.9**	0.9 **
Time to peak torsion	-	0.9**	0.5 *
Peak systolic torsion rate	-	0.4*	0.6 *
Peak diastolic torsion rate	-	0.8**	0.7 **

Ecc Circumferential strain, Err Radial strain.

ICC = Intraclass correlation coefficient.

** = p <0.0001.

* = p <0.05.