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Fig. 1C. —78-year-old woman with severe carotid stenosis as depicted equally well with multiple overlapping thin-section acquisition MR angiography, contrast-enhanced MR angiography, and intraarterial digital subtraction angiography. Intraarterial digital subtraction angiogram confirms focal severe stenosis caused by densely calcified plaque in carotid bulb (straight arrow) with bulbous dilatation of internal carotid artery just beyond stenosis (curved arrow). Both observers believed vessel margins were sharper on maximum-intensity-projection images from multiple overlapping thin-section acquisition MR angiogram (A), but contrast-enhanced MR angiograms (B) looked more like those on intraarterial digital subtraction angiography (C). Diagnostic confidence of surgical lesion was high for both MR angiographic techniques.