TRICKS Magnetic Resonance Angiography at 3-Tesla for Assessing Whole Lower Extremity Vascular Tree in Patients with High-Grade Critical Limb Ischemia: DSA and TASC II Guidelines Correlations

Figure 3

A 72-year-old male with bilateral lower leg ischemic rest pain and left foot ulcers. (a) Concatenated three-station T-MRA demonstrating multiple stenoses (arrows) (type B lesion based on TASC classification) in the left superficial femoral artery and multiple long segmental severe stenoses and occlusions of the infrapopliteal arteries. The left dorsalis pedis artery (open arrow) is patent. (b) Corresponding concatenated DSA demonstrating multiple stenoses in the left superficial femoral artery. The infrapopliteal and pedal arteries beyond the left knee are not opacified. (c) Follow-up angiogram after angioplasty of the left superficial femoral artery showing residual mild stenoses (arrows). (d) Selective DSA of the left foot after angioplasty with improved arterial inflow confirming the patency of the dorsal pedis artery (open arrow); the patient was subsequently managed with popliteal-dorsalis pedis bypass grafting.