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Fig. 2B —Comparison of anteroposterior maximum intensity projection images of right infrainguinal arteries obtained with fast spoiled 3D contrast-enhanced gradient-echo sequence in 75-year-old man after right antegrade percutaneous transluminal angioplasty of superficial femoral artery. Image obtained with conventional IV injection of standard dose of gadolinium.

Note purely arterial filling of all arteries of interest in intraarterial angiogram. Although in IV angiogram, all arteries are fully evaluable at thigh level showing precise bolus timing, assessment of infrapopliteal arteries is complicated due to considerable venous contamination and background tissue enhancement.