Table 2.

Repeatability of 2D and 3D MRE stiffness values measured under various conditions

	Condition		Repeatability parameter
MRE method	Breath-hold phase	Driver type	Bias (kPa)	RC	LOA (kPa)	ICC
2D*	Expiration	Rigid	0.07	0.29	−0.22, 0.36	0.86 (0.56, 0.96)
2D	Expiration	Flexible	0.01	0.33	−0.32, 0.34	0.91 (0.70, 0.98)
2D	Inspiration	Rigid	0.05	0.49	−0.44, 0.55	0.71 (0.22, 0.92)
2D	Inspiration	Flexible	−0.05	0.36	−0.41, 0.31	0.88 (0.61, 0.97)
3D	Expiration	Rigid	−0.02	0.20	−0.22, 0.19	0.84 (0.49, 0.96)
3D	Expiration	Flexible	0.01	0.20	−0.19, 0.21	0.90 (0.65, 0.97)
3D	Inspiration	Rigid	0.01	0.16	−0.16, 0.17	0.96 (0.86, 0.99)
3D	Inspiration	Flexible	0.03	0.26	−0.22, 0.29	0.90 (0.65, 0.97)

RC = Repeatability coefficient; LOA = limit of agreement; ICC = Intraclass coefficient of repeatability; ROI = Regions of Interests.

Values in parentheses are 95% confidence limits.

^*This implementation of MRE is the FDA-approved clinically available implementation of MRE.