Pet tracers for vulnerable plaque imaging.

Area of Science:

• Cardiovascular Imaging
• Molecular Imaging
• Atherosclerosis Research

Background:

• Vulnerable plaques are a primary cause of acute ischemic events, including acute coronary syndromes and stroke.
• These plaques exhibit specific histological and pathophysiological features such as inflammation, neo-angiogenesis, and a large lipid core.
• Current anatomical imaging techniques often fail to detect or underestimate the severity of vulnerable plaques due to non-hemodynamically significant stenosis.

Purpose of the Study:

• To review current research on positron emission tomography (PET) imaging for vulnerable atherosclerotic plaques.
• To highlight the potential of PET imaging in the early detection and assessment of rupture-prone plaques.
• To discuss the expanding clinical role of hybrid PET imaging techniques in evaluating atherosclerosis.

Main Methods:

• Review of current scientific literature on PET imaging in vulnerable plaque detection.
• Analysis of PET's ability to visualize metabolic processes and molecular-functional aspects of plaques.
• Evaluation of hybrid imaging techniques (PET-CT, PET-MRI) for simultaneous functional and morphological assessment.

Main Results:

• PET imaging provides molecular-functional evidence of vulnerable plaques, complementing anatomical imaging.
• Hybrid PET techniques allow simultaneous assessment of plaque function and morphology.
• PET imaging shows promise for detecting lesions often missed by conventional methods.

Conclusions:

• PET imaging represents a significant advancement in assessing vulnerable atherosclerotic plaques.
• Its ability to visualize metabolic processes offers crucial insights into plaque instability.
• Hybrid PET imaging is expected to play an increasingly important role in the clinical management of atherosclerosis.