Intracoronary imaging for detecting vulnerable plaque.

Area of Science:

• Cardiology
• Medical Imaging
• Atherosclerosis Research

Background:

• Acute coronary syndromes often result from thin-cap fibroatheroma (TCFA) rupture.
• TCFA is defined by a large necrotic core and a thin fibrous cap (<65 μm).
• Intracoronary imaging advancements enhance in vivo TCFA detection.

Purpose of the Study:

• To review and compare features and limitations of current intracoronary imaging modalities for TCFA detection.
• To highlight the role of advanced imaging in identifying vulnerable plaques.

Main Methods:

• Intravascular ultrasound (IVUS) analysis of acoustic signals for plaque composition.
• Coronary angioscopy for direct luminal surface visualization.
• Optical coherence tomography (OCT) for high-resolution imaging of fibrous cap thickness.

Main Results:

• IVUS provides extensive clinical data on vulnerable plaque detection.
• Angioscopy offers insights into plaque surface characteristics like thrombus and disruption.
• OCT provides superior resolution for visualizing thin fibrous caps (<65 μm).

Conclusions:

• Each imaging modality offers unique advantages for TCFA detection.
• Understanding the features and limitations is crucial for selecting the appropriate imaging technique.
• Advanced intracoronary imaging is vital for diagnosing and managing vulnerable atherosclerotic plaques.