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Fig. 4B. —62-year-old woman in whom contrast-enhanced MR angiography overestimated stenosis compared with multiple overlapping thin-section acquisition MR angiography. Maximum-intensity-projection image from contrast-enhanced MR angiogram suggests critical stenosis (arrow). Sagittally reformatted maximum-intensity-projection image was not as sharp in this patient, perhaps related to less than optimal gadolinium contrast enhancement on these magnified images.