. Author manuscript; available in PMC: 2009 Jan 23.

Published in final edited form as: NMR Biomed. 2008 Jun;21(5):453–463. doi: 10.1002/nbm.1209

Table 3. Diagnostic accuracy of ORI at 4.7 T for distinguishing MION-shifted water resonances from those water resonances shifted due to susceptibility differences at air interfaces.

MION concentration (μg Fe/mL)	MION-induced shift (Hz)	Optimal WSBW (Hz)	Area under ROC curve
256	502	800	0.801
128	222	—	0.230
64	102	—	0.195