Currently most percutaneous coronary interventions (PCI) are planned and performed on the basis of invasive coronary angiography which provides the information that is confined to the vessel lumen. This limitation may be partially responsible for the unfavorable long term outcome and complications that occur in some patients. Additional information on the disease burden in angiographically normal coronary segments adjacent to the lesion site could impact the treatment strategy and clinical results. Imaging modalities that allow not only lumen but also vessel wall assessment include both invasive (e.g. intravascular ultrasounds - IVUS) and non-invasive (e.g. multislice computed tomography - MSCT) methods. IVUS guidance of the coronary interventions is expensive and given its invasiveness is related to the additional risk. The number of patients who are referred for coronary angiography with significant stenosis diagnosed with MSCT is rapidly increasing. Most interventional cardiologists are not familiar with coronary vessel images produced by MSCT. The aim of our study is to assess if the analyses of MSCT images before the PCI may impact the treatment strategy and immediate results. The study will enroll subjects with significant coronary stenosis diagnosed with MSCT who are referred to the catheterisation laboratory for invasive angiography and PCI. The study participants will be randomized into two groups: