Fig. 2

a Multiple stenoses at right femoral artery and occlusion (arrows) of right popliteal artery were shown with CTA image; however, occlusions at bilateral lower leg were difficult to identify duo to multiple calcified plaques. b Occlusion of the right popliteal artery was also shown with QISS (arrows). Calcified plaques were not problematic with QISS, with occlusions easily identified at calf. c Occlusion of the right popliteal artery was proved by DSA (arrows). More collateral circulation vessels were shown with DSA