The primary hypothesis is that computertomography (CT) is superior to invasive coronary angiography (ICA) concerning the primary endpoint MACE (MACE = major adverse cardiovascular event; defined as at least one of the following: cardiovascular death, nonfatal myocardial infarction, and nonfatal stroke) after a maximum follow-up of 4 years, in other words, that CT will result in a significantly lower rate of MACE. Secondary outcomes include MICE (MICE = minor cardiovascular events), procedural complications, cost-effectiveness, radiation exposure, cross-over to CT or ICA, gender differences, and health-related quality of life.