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Fig. 1F —61-year-old man with arteriosclerotic obstructive disease and pain in left lower leg. Intraarterial MR angiogram obtained after angioplasty shows that overestimation of residual stenosis in superficial femoral artery (arrow) is due to calcification. Source images revealed stenosis of less than 50% (grade 1). This variability in degree of stenosis might be potential pitfall of this method. Peripheral pulses were palpable after angioplasty. Left ankle–brachial index improved from 0.50 to 0.83 after angioplasty.