Translating tomographic plaque imaging into treatment: interventional lipidology

Area of Science:

• Cardiovascular Imaging
• Interventional Cardiology
• Preventive Cardiology

Background:

• Statins show benefits irrespective of LDL-C levels, yet LDL-C reduction trials have shown limited event reduction.
• Traditional risk factor assessment may not fully capture individual patient atherosclerosis burden.
• Electron beam tomography (EBT) plaque imaging provides new insights into cardiovascular disease.

Purpose of the Study:

• To reorient traditional treatment paradigms for cardiovascular disease based on plaque imaging data.
• To evaluate the prognostic value of calcified plaque quantitation compared to conventional risk factors.
• To explore the role of plaque burden as a therapeutic target.

Main Methods:

• Utilized electron beam tomography (EBT) for plaque imaging and quantitation.
• Assessed correlation between lipid values (pre- and post-treatment) and calcified plaque burden.
• Compared prognostic value of plaque imaging with standard risk factor assessment.

Main Results:

• Calcified plaque quantitation demonstrated prognostic superiority over conventional risk factor assessment.
• Poor correlation observed between standard lipid values and plaque amount, and between lipid changes and plaque burden changes.
• Significant calcified plaque indicates a shift from primary to secondary prevention status for asymptomatic patients.

Conclusions:

• Plaque burden, not just plasma lipid values, should be the primary target of cardiovascular therapy.
• Abnormal lipid values should be defined by the level at which atherosclerosis develops in individual patients.
• Serial plaque imaging is recommended for evaluating the adequacy of cardiovascular therapy.