Table 2.

Experimental validation of speckle tracking against sonomicrometry

Study type	Parameter	Correlation
(Reference #)
2D STE (22)	Apical rotation	0.92
	Basal rotation	0.76
	Twist	0.94
2D STE (26)	Radial Strain	0.72
	Longitudinal Strain	0.80
2D STE (27)	Longitudinal Strain	0.90
3D STE (28)	Area Strain	0.87

2D STE: two-dimensional speckle tracking; 3D STE: three-dimensional speckle tracking.