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Fig. 1A —Self-expandable stents made of nitinol were implanted in iliac arteries for treatment of chronic iliac stenoses. Three-dimensional MR angiography was performed within 3 days and again 99-258 days after stent implantation. Each time, reference standard was intraarterial digital subtraction angiography (DSA). Three blinded observers assessed degree of residual or recurrent in-stent stenoses on DSA and MR angiography images independently of each other. Mean of all three observers' measurements on DSA and MR angiography images are given. Measurements refer to DSA (solid line) and MR angiography (dotted line) images obtained immediately after procedure (DSA 1 and MR angiography 1), in which 32 stents were evaluated.