. Author manuscript; available in PMC: 2016 Nov 1.

Published in final edited form as: J Magn Reson Imaging. 2015 Apr 1;42(5):1241–1248. doi: 10.1002/jmri.24896

Table 3.

Agreement of the R2* Measurements Between Breath-Hold (BH) and Free-Breathing Technique With Bellows (BL) or Navigator Echoes (NV).

	BH vs. BL	BL vs. NV	NV vs. BH
Anterior lobe
Correlation coefficient [95% CI]	0.841 [0.731–0.908]	0.8376 [0.726–0.906]	0.963 [0.935–0.979]
Mean difference [90% CI] (s⁻¹)	−0.39 [−1.88–1.09]	−0.41 [−2.14–1.31]	0.80 [−1.07–2.69]
P value for equivalent test	<0.001	<0.001	<0.001
Posterior lobe
Correlation coefficient [95% CI]	0.708 [0.526–0.828]	0.621 [0.403–0.772]	0.939 [0.893–0.965]
Mean difference [90% CI] (s⁻¹)	0.32 [−1.06–1.70]	−1.83 [−4.54–0.88]	1.51 [−0.31–3.33]
P value for equivalent test	<0.001	<0.028	0.001
Lateral lobe
Correlation coefficient [95% CI]	0.894 [0.816–0.940]	0.868 [0.774–0.925]	0.955 [0.922–0.974]
Mean difference [90% CI] (s⁻¹)	1.30 [–0.55–3.17]	−1.81 [−4.28–0.67]	0.50 [−1.67–2.68]
P value for equivalent test	<0.001	<0.018	<0.001

Difference is shown as mean (standard deviation). Two one-sided paired t-test is used to show “equality” of the results from each sequence, ie: P < 0.05 suggests no more than 5 s⁻¹ difference in R2* measurements between the paired sequences. Confidence interval (CI) is shown as 90% CI, because one-sided t-test with alpha of 0.05 was done twice for both sides.