Intracoronary Imaging With Optical Coherence Tomography
A New High-Resolution Technology Providing Striking Visualization in the Coronary Artery
Optical Coherence Tomography (OCT; LightLab) is a catheter-based technology producing images from backscattered “echoes” similar to intravascular ultrasound (IVUS), but using high-bandwidth light sources (infrared light). This new technology provides ultra-high resolution for endovascular visualization. In comparison to common IVUS imaging, OCT enables optimal plaque identification, detection of thin tissue structures (eg, re-endotheli- alization, dissections) and remarkable visualization of stent strut features. The case presented illustrates the 6-month follow-up examination after drug-eluting stent implantation for the treatment of in-stent restenosis (stent-in-stent) (Figure 1). Because of the high resolution, OCT provides striking visualization of both the doubled stent layer and neointimal proliferation after drug-eluting stent implantation (Figures 2 and 3⇓).
The editor of Images in Cardiovascular Medicine is Hugh A. McAllister, Jr, MD, Chief, Department of Pathology, St Luke’s Episcopal Hospital and Texas Heart Institute, and Clinical Professor of Pathology, University of Texas Medical School and Baylor College of Medicine.
Circulation encourages readers to submit cardiovascular images to the Circulation Editorial Office, St Luke’s Episcopal Hospital/Texas Heart Institute, 6720 Bertner Ave, MC1-267, Houston, TX 77030.