The invasive assessment of coronary atherosclerosis and stents using optical coherence tomography: a clinical update

Area of Science:

• Cardiovascular Medicine
• Medical Imaging
• Biomedical Engineering

Background:

• Ischaemic heart disease (IHD) is a major global cause of mortality.
• Atherosclerosis, a key contributor to IHD, necessitates advanced diagnostic tools.
• Current imaging techniques have limitations in visualizing coronary plaque morphology and tissue response post-stenting.

Purpose of the Study:

• To highlight the role of optical coherence tomography (OCT) in characterizing coronary atherosclerotic plaque.
• To explore OCT's utility in evaluating tissue responses after coronary stent implantation.
• To demonstrate OCT's potential in assessing vulnerable plaque features and guiding therapeutic decisions.

Main Methods:

• Utilizes optical coherence tomography (OCT), an invasive, light-based intracoronary imaging modality.
• Employs near-infrared light for imaging with a 15-micron resolution, surpassing other intravascular techniques.
• Enables detailed visualization of coronary artery lumen and wall structures in vivo.

Main Results:

• OCT allows for comprehensive detection of vulnerable plaque characteristics, such as large lipid pools and thin fibrous caps.
• The technology facilitates assessment of optimal stent deployment within the coronary artery.
• OCT visualizes neointimal tissue formation over stent surfaces, offering potential surrogate markers for stent safety.

Conclusions:

• Optical coherence tomography (OCT) is a valuable tool for in vivo characterization of coronary atherosclerosis and stent response.
• OCT imaging can identify high-risk plaque features and assess stent implantation adequacy.
• This technology may inform decisions regarding dual antiplatelet therapy duration for improved long-term stent safety.