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Figure 1


Fig. 1A —80-year-old woman with increasing pain in left foot. Coronal three-station 3D gadolinium-enhanced MR angiography (MRA) of left lower extremity arteries after IV administration of 45 mL of gadolinium-based contrast agent is performed on 1.5-T MR system. Iliac arteries are widely patent. Left superficial femoral artery is occluded at its origin. Extensive collaterals from femoral artery attempt to reconstitute run-off vessels. Note segmental reconstitution of posterior tibial artery in distal calf (arrow). After 1 week, patient developed rest pain in left foot and underwent emergency digital subtraction angiography.