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Coronary artery disease: new insights and their implications for radiology
Marc Dewey1, Adrian C Borges, Dietmar Kivelitz
1Department of Radiology, Charité Medical School, Freie Universität und Humboldt-Universität zu Berlin, Schumannstrasse 20/21, P.O. Box 10098, 10117 Berlin, Germany. marc.dewey@charite.de
Insights
Coronary artery disease (CAD) is an inflammatory condition. Advanced imaging like MRI and CT can identify high-risk plaques, potentially improving diagnosis and treatment strategies for heart disease.
Area of Science:
- Cardiology
- Medical Imaging
Background:
- Coronary artery disease (CAD) is primarily caused by coronary atherosclerosis, increasingly viewed as an inflammatory disorder.
- Plaque rupture, leading to acute coronary syndromes, is a critical event driven by specific factors.
- Understanding plaque composition is key to identifying rupture-prone lesions.
Purpose of the Study:
- To explore the role of advanced imaging in diagnosing and managing CAD.
- To evaluate the potential of MRI and CT in identifying vulnerable atherosclerotic plaques.
- To compare the efficacy of novel imaging techniques with conventional diagnostic methods.
Main Methods:
- Review of current understanding of CAD etiology and atherosclerosis.
- Assessment of Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) for plaque characterization.
- Comparison with established diagnostic procedures like exercise electrocardiography, stress echocardiography, and stress scintigraphy.
Main Results:
- Atherosclerosis is an inflammatory process responsive to modulation.
- MRI and CT offer visualization of coronary plaque composition, identifying high-risk plaques.
- Myocardial late enhancement on MRI provides crucial data for therapeutic decisions.
Conclusions:
- Advanced imaging techniques, particularly MRI and CT, show significant promise in CAD diagnosis.
- These modalities are expected to become central to diagnosing suspected CAD, potentially replacing conventional methods.
- MRI and CT are anticipated to be cost-effective in the diagnosis of coronary artery disease.
Abstract:
Coronary artery disease (CAD) diminishes local, regional, or global blood supply to the heart and is most commonly caused by coronary atherosclerosis. New insights into the etiology of atherosclerosis suggest that CAD is an inflammatory disorder that responds well to modulation rather than an unchangeable chronic process. Since 75% of all acute coronary syndromes result from rupture of atherosclerotic plaques, factors causing rupture have a crucial role. Magnetic resonance imaging and CT have the potential to visualize the composition of coronary artery plaques and thus to identify plaques at risk. Considering the new insights into stunning and hibernation, myocardial late enhancement on MRI might provide pivotal information for therapeutic decision making among lysis therapy, catheter intervention, and bypass surgery. Exercise electrocardiography without or with right precordial leads, stress echocardiography, and stress scintigraphy are simple clinical procedures to identify CAD with high sensitivities of 67, 92, 76, and 88%, respectively. The MRI and CT have to be compared with these good results. Nevertheless, we are expecting that MRI and CT will replace the conventional diagnostic modalities, gain a central role in diagnosing patients with suspected CAD, and prove to be cost-effective in this regard.
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