User variability across ROI selection methods for in vivo and ex vivo iron quantification. Reported average difference in mean (μg), SEM and CoV (%).

ROI method	In vivo			Ex vivo (liver)
	1 (K = 5)	2 (Liver)	3	1 (K = 5)	3
Avg. diff. mean (μg)	68.62	102.46	475.73	29.62	38.34
SEM	51.82	76.96	404.25	16.76	25.48
CoV (%)	9.16	19.10	28.48	13.02	15.21