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Methods 110 with CABG were included in three German centers to the study and underwent stress perfusion (140 μg/kg/min adenosine, 0.1 mmol/kg Gadolinium-based contrast agent bolus) (3–5 short axis slices, dependent on heart beat, matrix 2.8 × 2.8 mm) and late enhancement (10 min. after a second contrast agent bolus of 0.1 mmol/kg). CMR images were assessed visually using the 16-segments model. Myocardial ischemia was defined as resgional hypoenhancement in stress perfusion with absent late enhancement. All patients underwent coronary angiography. A significant stenosis was defined by QCA in case of ≥ 70% of coronary artery or bypass graft narrowing in vessels ≥ 2 mm diameter. Results A relevant vessel stenosis or occlusion was present in 71 (65%) CABG patients. PCI was performed 314 ± 231 and CABG 423 ± 275 days before CMR examination. Sensitivity was 0.73, specificity 0.77 and overall accuracy 0.75 per patient.

2021 Cardiac magnetic resonance stress perfusion and late enhancement in patients with coronary bypass graft