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Fig. 1A —68-year-old man with suspected renovascular hypertension. Coronal and axial subvolume maximum intensity projections (MIPs) from navigator-gated steady-state free precession (Nav SSFP) MR angiography (A and C) and contrast-enhanced MR angiography (CE-MRA) (B and D) show concordance for normal right renal artery (0% on CE-MRA, 11% on Nav SSFP MR angiography) and high-grade left renal artery stenosis (arrows) of 95% on CE-MRA and 82% on Nav SSFP. Note that there appears to be more than 11% stenosis on Nav SSFP in right renal artery (A) secondary to MIP artifact from overlapping signal in inferior vena cava. Stenosis measurements were obtained from thin-slice reformatted images rather than from MIPs.