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Fig. 1A 61-year-old man with arteriosclerotic obstructive disease and
pain in left lower leg. Selective intraarterial digital subtraction angiogram
obtained before angioplasty with sheath in left superficial femoral artery
(injection rate, 5 mL/sec; total volume, 10 mL) shows 3-cm occlusion (grade 4)
of distal superficial femoral artery.