Our results show that noninvasive bypass angiography with the ultrafast multi-slice CT (MSCT) provides relevant information for the practicing cardiologist. Noninvasive bypass angiography with a cardio-CT predominantly aims at asymptomatic patients without proof of myocardial ischemia ("bypass check") for the detection of asymptomatic occluded bypass grafts as early as possible. In patients with asymptomatic bypass occlusion, considering a coronary or bypass intervention for prognostic reasons is an option. It is important to note that in our study in a mean of 5 years after bypass surgery almost every third patient had an unexpected bypass graft occlusion.
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