Coronary artery imaging in the new millennium

Area of Science:

• Cardiovascular Medicine
• Medical Imaging
• Pathology

Background:

• Atherosclerotic disease and its thrombotic complications are leading causes of mortality globally, particularly in Australia.
• Plaque disruption, not stenosis severity, is key to acute coronary syndromes like heart attacks.
• Current diagnostic tools primarily assess stenosis, failing to identify vulnerable plaques responsible for most events.

Purpose of the Study:

• To review current imaging modalities for coronary artery imaging.
• To explore advancements in detecting atherosclerotic plaque composition.
• To improve understanding and management of patients at risk of coronary artery disease.

Main Methods:

• Review of existing literature on coronary artery imaging modalities.
• Analysis of diagnostic capabilities for assessing atherosclerotic plaque characteristics.
• Focus on non-invasive and invasive imaging techniques.

Main Results:

• Current non-invasive and invasive methods primarily measure stenosis, not plaque composition.
• Vulnerable plaques, characterized by large lipid cores and thin fibrous caps, are central to rupture and thrombosis.
• Most acute coronary events arise from non-critically stenosed lesions, currently undetected.

Conclusions:

• Accurate identification of patients at risk for acute coronary events is limited.
• New detection techniques focusing on atherosclerotic lesion composition are crucial.
• Advancements in imaging modalities are needed to better manage cardiovascular disease.