Table 2.

Marker displacements between gold standard registrations and marker-based registrations.

Gold-std. registrations: Fully sampled MR Marker-based registrations: Breath-hold MR		Mean offset and standard deviation
		Phase Enc. (A/P)	Slice Sel. (S/I)	Readout (R/L)
MR sequence (N = 16)	T1w	0.7 ± 0.3	0.1 ± 0.9	0.0 ± 0.3
	T2*w	−0.4 ± 0.5	0.0 ± 0.6	0.1 ± 0.4
	T2w	0.1 ± 0.3	1.0 ± 0.9	0.6 ± 0.5
	One way ANOVA result	p < 0.001	p = 2.8 × 10−3	p < 0.001
Marker arrangement (N = 24)	Coplanar	0.3 ± 0.5	0.6 ± 0.9	0.3 ± 0.5
	Non-coplanar	−0.1 ± 0.7	0.2 ± 0.9	0.1 ± 0.4
	2 sample t-test result	p = 0.04	p = 0.13	p = 0.07
Test object orientation (N = 24)	Horizontal	0.1 ± 0.7	0.1 ± 0.6	0.0 ± 0.4
	Vertical	0.1 ± 0.5	0.7 ± 1.1	0.4 ± 0.4
	2 sample t-test result	p = 0.94	p = 0.02	p < 0.001

Results are listed with the p-value from the relevant statistical significance test performed. Here N is the number of measurements. Values shown in bold indicate results which reject the null hypothesis of a population mean equal to zero using a one-sample t-test (p < 0.05).