Table 3.

Reproducibility of 2D and 3D MRE stiffness values measured under different breath-hold phases, keeping driver type constant

	Conditions		Reproducibility parameter
MRE method	Breath-hold phase (Variable condition)	Driver type (Constant condition)	Bias (kPa)*	Bias p- value	RDC	LOA (kPa)	CCC
2D	Exp – Ins	Rigid	− 0.08	0.14	0.44	−0.52, 0.36	0.72 (0.38, 0.89)
2D	Exp – Ins	Flexible	− 0.07	0.28	0.54	−0.62, 0.47	0.71 (0.36, 0.88)
3D	Exp – Ins	Rigid	− 0.19	<0.01	0.31	−0.50, 0.13	0.61 (0.26, 0.81)
3D	Exp – Ins	Flexible	− 0.13	<0.01	0.30	−0.42, 0.17	0.73 (0.41, 0.89)

Table summarizes the reproducibility parameters for 2D and 3D MRE measured under different breath-hold phases, keeping driver type constant.

^*The bias is calculated as the mean value in expiration minus the mean value in inspiration. Hence, a negative bias indicates that liver stiffness values measured in expiration were less than those measured in inspiration.

Ins=inspiration;. Exp=expiration;. RDC=reproducibility coefficients; LOA=Limit of Agreement; CCC=concordance correlation coefficients.

Values in parentheses are 95% confidence limits.