Abstract 17187: Head to Head Comparison of Coronary MR and CT Angiography for Prediction of Cardiovascular Events - A Long-term Follow-up Study
Objectives: To compare the prognostic value of coronary magnetic resonance angiography (CMRA) and coronary multislice computed tomography angiography (CCTA) for prediction of future cardiovascular events.
Methods: One hundred twenty consecutive patients with suspected or known coronary artery disease prospectively underwent 32-channel 3.0-T MRI and 64-slice CT before elective X-ray angiography. The presence of significant coronary stenosis was defined as a reduction of ≥50% in the luminal diameter. All patients were followed-up for the occurrence of cardiovascular events (death, myocardial infarction, necessity of percutaneous or surgical revascularization, necessity of invasive angiography or hospitalization due to recurrent chest pain, and cerebrovascular event).
Results: During a mean follow-up of 40 ± 16 months 40 cardiovascular events were recorded. Kaplan-Meier curves demonstrated no significant differences in event-free survival between the two techniques (log-rank test p=0.965) (figure). Additionally, no significant differences were also observed when the analysis was performed based on the number of vessels affected or based on the evaluated vessel. The area under the receiver-operator characteristic curve was 63% (95% CI: 52 to 73) for CMRA (p=0.03) and 67% (95% CI: 57 to 77) for CCTA (p=0.003).
Conclusions: In patients with suspected or known coronary disease, CMRA and CCTA provides similar prognostic value.
Figure legend: Kaplan-Meier curve in patients without significant lesions at coronary magnetic resonance angiography (CMRA) and coronary multislice computed tomography angiography (CCTA) demonstrates no significant difference in outcome.
- © 2013 by American Heart Association, Inc.