 The hypothesis of the PROCTOR study is that high resolution imaging with optical coherence tomography oct will improve diagnosis and enable a more specific or tailored treatment in stent failure. However, the prevalence of stentfailure ie stent malapposition, stentfracture, stentedgedissections etc not causing clinical endpoints is not known. In a subset of patients n100 with previously implanted stents performing a new coronary angiography based on clinical indication, functional or patent stents decided by Heart team will be characterized with OCT and the patients followed for 5 years. The purpose of this substudy, OCT IPS OCT In Patent Stents, is to estimate the prevalence of stentpathology in patent or functional stents and compare findings with the active arm of PROCTOR. 